Ex1:

1. studied - would have

2. had - would buy

3. slept - wouldn't be

4. were - would visit

5. weren't - would have to

6. were early - would go

7. had - would study

8. were - would report

9. loved - wouldn't leave

10. won - would travel

Ex2;

1. lost - would you do

2. talked - would never talk

3. wouldn't have to - had

4. wouldn't trust - were

5. caught - would you do

6. broke down - wouldn't be able to

7. came - would be

8. wouldn't come - were

9. exercised - would be

10. insulted - would you do

Ex3:

1. I have never seen him before.

2. I have studied English for 3 years.

3. I last saw him when I left school.

4. It has rained for 2 days.

5. She is the most beautiful girl I have ever seen.

6. It is the coldest winter we have ever had.

7. She hasn't kissed me for 5 months.

8. We haven't met for a long time.

9. How long have you had it?

10. She has driven for 1 month.

Study well!