1 I SAW (see) a car accident while I WAS WAITING (wait) for you on this corner yesterday.

2 Mr.ANH HAS BEEN (be) principal of our school since last year.

3 Mr.Smith HAS TAUGHT (teach) at this school since he GRADUATED (graduate) in 1980.

4 My father DOESN'T WATCH (not watch) TV every night.

5 I MET (meet) Authur three weeks ago.

6 Yesterday the police REPORTED (report) that they HAD CAPTURED (capture) the thief.

7 My friend THANKED (thank) me for what I had done for him.

8 someone STOLE (steal) my handbag on the bus.

9 The browns HAS BEEN LIVING (live) in Paris for 7 years when the second World War BROKE (break) down

10 Last month I HAD BEEN (be) in the hospital for ten days.