Dưới đây là các câu đã được sửa lỗi:

**CDT 1: Give the correct tense or form of the verbs in brackets.**

1. Mr. Smith (teach) at this school since he (graduate) in 1980.
- has taught - graduated

2. It (report) by the police yesterday that the thief (capture).
- was reported - had been captured

3. I (have) a party until 11 pm last night. Then I (go) to bed at once.
- had - went

4. I (stay) here until he (come) tomorrow.
- will stay - comes

5. When she finally (arrive), I (wait) for two and a half hours.
- arrived - had been waiting

6. I (not like) to be treated as if I (be) a child.
- don't like - were

7. My mother (not be) in her room at the moment. She (cook) in the kitchen.
- isn't - is cooking

8. When (ask) about his future plan, he said he was considering (change) his job.
- asked - changing

9. I'm afraid by the time she (arrive) at the airport, the plane (take) off.
- arrives - will have taken

10. (control) and it's essential that pollution eventually (eliminate).
- Controlled - be eliminated

**CDT 2: Give the correct form of the verbs in brackets.**

1. The man at the corner table (glance) my way to see if I (listen).
- glanced - was listening

2. When I (look) at my suitcase, I could see that somebody (try) to open it.
- looked - had tried

3. I don't know what's the matter with him. He (act) funny since you (be) away.
- has been acting - were

4. Scarcely they (move) into the new house when their friends (come) in.
- had they moved - came

5. Just as I (wonder) what to do next, the phone (ring).
- was wondering - rang

6. I'd rather you (not wear) jeans to the office.
- didn't wear

7. The teller was made (lie) down on the floor.
- to lie

8. The money (steal) in the robbery was never found.
- stolen

9. This building (be) finished by the end of 2025.
- will be

10. My boss is angry with me. I didn't do all the work that I (do) last week.
- should have done

**CDT 3: Complete the following sentences with the correct form of the verbs in brackets.**

1. Has anyone shown you what (do) now?
- to do

2. I realized that someone (steal) my wallet when I felt their hand in my jacket pocket.
- had stolen

3. (Watch) her baby, she smiled happily.
- Watching

4. I wrote suggesting that he (come) for the weekend.
- come

5. When you (take) the medicine, you'll feel much better.
- take

6. By the time he (return) next month, his girlfriend will have got married for 4 months.
- returns

7. Not until Ann spoke to the doctor, she (understand) how serious her illness was.
- understood

8. Tom appreciated (serve) dinner in bed when he wasn't feeling well.
- being served

9. Linda has lost her passport again. It's the second time this (happen).
- has happened

10. If I (follow) the doctor's advice, I would be better now.
- had followed

**CDT 4: Give the correct tense or form of the verbs in brackets.**

1. If you (be) in my position now, what (you do)?
- were - would you do

2. John (do) the test again at the moment because he (not pass) it the first time.
- is doing - didn't pass

3. Last time his doctor (suggest) that he (give up) smoking.
- suggested - give up

4. If he (see) the doctor last week, he (not suffer) now.
- had seen - would not be suffering

5. When I (pass) her house the other day, I saw her (water) the trees in the garden.
- passed - watering

6. Tom (finish) this course when his father (return) next month.
- will have finished - returns

7. The author (write) three novels when he (be) only 35 years old.
- had written - was

8. John (wish) he (know) Chinese well.
- wishes - knew