Mk đã có đáp án ở bài này, nhờ các bạn ghi vì sao lại chọn đáp án như thế nhé, THANK YOU:
1. Put the verbs in brackets into the correct form (gerund or infinitive).
1. He hates (answer) the phone, and very often just lets it (ring).
2. If you go on (let) your dog (chase) cars he'll end by (be) run over.
3. I prefer (drive) to (be driven).
4. I advise you (start) (look) for a flat at once.
5. Would you mind (lend) me Ј5? I forgot (cash) a cheque.
6. (Lie) on this beach is much more pleasant than (sit) in the office.
7. She likes her children (go) to the dentist every six months.
8. By (neglect) (take) ordinary precautions he endangered the life of his crew.
9. An instructor is coming (show) us how (use) the aqualung.
10. I have no intention of (go) to that film; I couldn't bear (see) my favourite actress in
such a dreadful part.
11. I suggest (telephone) the hospitals before (ask) the police (look) for him.
12. After (hear) the conditions I decided (not enter) for the competition.
13. Some people seem (have) a passion for (write) to the newspapers.
14. He expects me (answer) by return but I have no intention of (reply) at all.
15. I tried (explain) to him but he refused (listen) and went on (grumble).
16. By (offer) enormous wages he is persuading men (leave) their present jobs and (work) for him.
17. He postponed (make) a decision till it was too late (do) anything.
18. Imagine (have) (get up) at five a.m. every day!
19. Try (forget) it: it isn't worth (worry) about.
20. There is no point in (remain) in a dangerous place if you can't do anything (help) the people who have (stay) there.
21. The horse won't be well enough (run) in tomorrow's race. He doesn't seem (have recovered) from his long journey.
22. At first I enjoyed (listen) to him but after a while I got tired of (hear) the same story again and again.
23. It is usually easier (learn) a subject by (read) books than by (listen) to lectures.
24. It wouldn't be safe (start) down now; we'll have (wait) till the mist clears.
25. After (discuss) the matter for an hour the committee adjourned without (have reached) any decision.
26. It's not much use (have) a bicycle if you don't know how (ride) it.
27. He didn't dare (leave) the house because he was afraid of (meet) someone who might (recognize) him.
28. I distinctly remember (pay) him. I gave him Ј2.
29. Did you remember (give) him the key of the safe? ~ No, I didn't. I'll go and do it now.
30. Please forgive me for (interrupt) you but would you mind (repeat) that last sentence?
31. I know my hair wants (cut) but I never have time (go) to the hairdresser's.
32. He made a lot of money by (buy) tickets in advance and (sell) them for twice the price on the day of the match.
33. She rushed out of the room without (give) me a chance (explain).
34. He keeps (ask) me the time and I keep (tell) him (buy) himself a watch.
35. He has a theory that it is possible (tell) the time in daylight by (look) into a cat's eyes.
36. I'd hate (be) beside a volcano when it started (erupt).
ANSWER KEY
1 answering, ring 2 letting, chase, being 3 driving, being driven 4 to start looking 5 lending, to cash 6 Lying, sitting 7 to go 8 neglecting to take 9 to show, to use 10 going, to see/seeing 11 telephoning, asking, to look 12 hearing, not to enter 13 to have, writing 14 to answer, replying 15 to explain, to listen, grumbling 16 offering, to leave, (to) work 17 making, to do 18 having to get up 19 to forget, worrying 20 remaining, to help, to stay 21 to run, to have recovered 22 listening, hearing 23 to learn, reading, listening 24 to start, to wait 25 discussing, having reached 26 having, to ride 27 (to) leave, meeting, recognize 28 paying 29 to give 30 interrupting, repeating 31 cutting, to go 32 buying, selling 33 giving, to explain 34 asking, telling, to buy 35 to tell, looking 36 to be, to erupt/erupting


2. BÀI TẬP NÀY MK CÓ KEY DƯỚI RỒI, NHỜ CÁC BẠN GIẢI ĐÁP VÌ SAO LẠI CHỌN KEY ĐÓ CHO TỪNG CÂU. THANK YOU 
​1. He hates (answer) the phone, and very often just lets it (ring).
2. If you go on (let) your dog (chase) cars he'll end by (be) run over.
3. I prefer (drive) to (be driven).
4. I advise you (start) (look) for a flat at once.
5. Would you mind (lend) me Ј5? I forgot (cash) a cheque.
6. (Lie) on this beach is much more pleasant than (sit) in the office.
7. She likes her children (go) to the dentist every six months.
8. By (neglect) (take) ordinary precautions he endangered the life of his crew.
9. An instructor is coming (show) us how (use) the aqualung.
10. I have no intention of (go) to that film; I couldn't bear (see) my favourite actress in
such a dreadful part.
11. I suggest (telephone) the hospitals before (ask) the police (look) for him.
12. After (hear) the conditions I decided (not enter) for the competition.
13. Some people seem (have) a passion for (write) to the newspapers.
14. He expects me (answer) by return but I have no intention of (reply) at all.
15. I tried (explain) to him but he refused (listen) and went on (grumble).
16. By (offer) enormous wages he is persuading men (leave) their present jobs and (work) for him.
17. He postponed (make) a decision till it was too late (do) anything.
18. Imagine (have) (get up) at five a.m. every day!
19. Try (forget) it: it isn't worth (worry) about.
20. There is no point in (remain) in a dangerous place if you can't do anything (help) the people who have (stay) there.
21. The horse won't be well enough (run) in tomorrow's race. He doesn't seem (have recovered) from his long journey.
22. At first I enjoyed (listen) to him but after a while I got tired of (hear) the same story again and again.
23. It is usually easier (learn) a subject by (read) books than by (listen) to lectures.
24. It wouldn't be safe (start) down now; we'll have (wait) till the mist clears.
25. After (discuss) the matter for an hour the committee adjourned without (have reached) any decision.
26. It's not much use (have) a bicycle if you don't know how (ride) it.
27. He didn't dare (leave) the house because he was afraid of (meet) someone who might (recognize) him.
28. I distinctly remember (pay) him. I gave him Ј2.
29. Did you remember (give) him the key of the safe? ~ No, I didn't. I'll go and do it now.
30. Please forgive me for (interrupt) you but would you mind (repeat) that last sentence?
31. I know my hair wants (cut) but I never have time (go) to the hairdresser's.
32. He made a lot of money by (buy) tickets in advance and (sell) them for twice the price on the day of the match.
33. She rushed out of the room without (give) me a chance (explain).
34. He keeps (ask) me the time and I keep (tell) him (buy) himself a watch.
35. He has a theory that it is possible (tell) the time in daylight by (look) into a cat's eyes.
36. I'd hate (be) beside a volcano when it started (erupt).
ANSWER KEY
1 answering, ring 2 letting, chase, being 3 driving, being driven 4 to start looking 5 lending, to cash 6 Lying, sitting 7 to go 8 neglecting to take 9 to show, to use 10 going, to see/seeing 11 telephoning, asking, to look 12 hearing, not to enter 13 to have, writing 14 to answer, replying 15 to explain, to listen, grumbling 16 offering, to leave, (to) work 17 making, to do 18 having to get up 19 to forget, worrying 20 remaining, to help, to stay 21 to run, to have recovered 22 listening, hearing 23 to learn, reading, listening 24 to start, to wait 25 discussing, having reached 26 having, to ride 27 (to) leave, meeting, recognize 28 paying 29 to give 30 interrupting, repeating 31 cutting, to go 32 buying, selling 33 giving, to explain 34 asking, telling, to buy 35 to tell, looking 36 to be, to erupt/erupting

3. BÀI TẬP NÀY MK CÓ KEY DƯỚI RỒI, NHỜ CÁC BẠN GIẢI ĐÁP VÌ SAO LẠI CHỌN KEY ĐÓ CHO TỪNG CÂU. THANK YOU
Put the verbs in brackets into gerund or infinitive.
1. I used (ride) a lot but I haven't had a chance (do) any since (come) here. ~ I ride sometimes. Would you like (come) with me next time?
2. Most people prefer (spend) money to (earn) it.
3. I resented (be) unjustly accused and asked him (apologize).
4. It isn't good for children (eat) too many sweets.
5. I didn't feel like (work) so I suggested (spend) the day in the garden.
6. Why do you keep (look) back? Are you afraid of (be) followed?
7. Do you remember (post) the letter? ~ Yes, I do; I posted it in the letter-box near my gate.
8. Did you remember (lock) the door? ~ No, I didn't. I'd better (go) back and (do) it now.
9. You still have a lot (learn) if you'll forgive my (say) so.
10. It's no use (try) (interrupt) him. You'll have (wait) till he stops (talk).
11. I'm for (do) nothing till the police arrive. They don't like you (move) anything when a crime has been committed.
12. He didn't like (leave) the children alone in the house but he had no alternative as he had (go) out to work.
13. Why didn't you drink it?- I didn't like (drink) it as I didn't know what it was.
14. I'm very sorry for (be) late. It was good of you (wait) for me.
15. I keep (try) (make) mayonnaise but I never succeed. ~ Try (add) the yolk of a hard-boiled egg.
16. Do you feel like (go) to a film or would you rather (stay) at home?
17. She told me (look) through her correspondence and (take) out any letters that you had written her. I didn't like (look) through someone else's letters but I had (do) as she said.
18. He took to (get up) early and (walk) noisily about the house.
19. I liked (listen) to folk music much better than (listen) to pop.
20. The car began (make) an extraordinary noise so I stopped (see) what it was.
21. You'll never regret (do) a kind action.
22. He decided (put) broken glass on top of his wall (prevent) boys (climb) over it.
23. He annoyed me very much by (take) the piece of cake that I was keeping (eat) after my supper.
24. He kept (ring) up and (ask) for an explanation and she didn't know what (do) about him.
25. We got tired of (wait) for the weather (clear) and finally decided (set) out in the rain.
26. He made me (repeat) his instructions (make) sure that I understood what I was (do)
27. I suggest (leave) the car here and (send) a breakdown van (tow) it to the garage.
28. She apologized for (borrow) my sewing-machine without (ask) permission and promised never (do) it again.
29. I didn't mean (offend) anyone but somehow I succeeded in (annoy) them all.
30. She claimed (be able) (tell) the future by (gaze) into her crystal ball.
31. He never thinks of (get) out of your way; he expects you (walk) round him.
32. You don't need (ask) his permission every time you want (leave) the room.
33. The police accused him of (set) fire to the building but he denied (have been) in the area on the night of the fire.
34. I left my door open. Why didn't you walk in? ~ I didn't like (go) in when you weren't there.
35. It's much better (go) to a hairdresser than (try) (save) time by (cut) your own hair.
36. I'd rather (earn) my living by (scrub) floors than (make) money by (blackmail) people.
ANSWER KEY
1 to ride, to do, coming, to come 2 spending, earning 3 being, to apologize 4 to eat 5 working, spending 6 looking, being 7 posting 8 to lock, go, do 9 to learn, saying 10 trying to interrupt, to wait, talking 11 doing, to move/moving 12 leaving, to go 13 to drink 14 being, to wait 15 trying to make, adding 16 going, stay 17 to look, (to) take, looking, to do 18 getting up, walking 19 listening, listening 20 to make/making, to see 21 doing 22 to put, to prevent, climbing 23 taking, to eat 24 ringing, asking, to do 25 waiting, to clear, to set 26 repeat, to make, to do 27 leaving, sending, to tow
28 borrowing, asking, to do 29 to offend, annoying 30 to be able to tell, gazing 31 getting, to walk 32 to ask, to leave 33 setting, having been 34 to go 35 to go, (to) try to save, cutting 36 earn, scrubbing, make, blackmailing