Exercise 1: Put the verbs in brackets in to the correct forms:
1. If he (eat)......................................... all that, he will be ill.
2. She could give us some advice if she (be)............................................ here now.
3. What (happen)........................................... if my parachute does not open?
4. The baby (wake) ....................................... up if you spoke louder.
5. If he had gotten one more mark, he (pass)………………………………the exam.
6. If she (not get)................................. married early, she wouldn’t have had many children.
7. If I (know) ..............................................the answer, I would tell you.
8. You (not have)............................................. so many accidents if you drove more carefully.
9. If Peter (ask)............................................ me, I’ll help him with all my ability.
10. If she studied harder, she (get)................................................... better grades.
11. If I (be)................................. you, I (tell) ....................................... them the truth.
12. If you (do)..................................... as I told you, you (succeed).......................................
13. I (not go).......................................... to his house unless you go with me.
14. We could have a drink if it............................................. (not be) so late.
15. Please don’t disturb him if he (be).............................................. busy.
16. If ice (be).................................. heavier than water, it (not float)...........................................
17. They would be glad if the rain (stop)………………………soon.
18. If Jack (come) ………………………….to my party, I would have danced with him.
19. It’s too bad Helen isn’t here. If she (be) ……………..here, she (know) …………………….. what to do.
20. Lee will go to a Disneyland if he (save) ………………………… enough money.