1. Yesterday, I spent  (spend) two hours (do)to do  the homework.

2. The thief (catch)were caught  when he (leave) were leaving  the bank.

3. Two hours ago, Mrs Brown (have)had Alice (take)take her son to the school.

4. How many times you (be)have- been to Ho Chi Minh City?

5. The moon (move)moves around the earth.

6. Next summer, my parents will let me (visit) visit my grandfather.

7. This film is the best one I ever seen (see) .

8. I (not see) haven't seen him since he (leave)left  this school.

9. My father (work)has worked for a China factory since 1987

10. We (spend)spent several weeks in Ha Long Bay last summer.

11. Lan and Nga haven't finished  (not finish) their homework yet.

12. They enjoy ( live )living in Nha Trang.