1.I suddenly realized that I __had been thinking___(think) about Simon all afternoon.

2. After Sandy __had finished___ (finish) breakfast she MADE (make) some phone calls.

3. The accident HAPPENED (happen) while we WERE DRIVING (drive) to Norway.

4. I know Lucy fairly well. I HAVE KNOWN (know) her for years.

5. Ricky HAS LOVED (love) Kate passionately since they first MET (meet) in Canada.

6. Dolly ______HAD BEEN TAKING ____(take) riding lessons for a year or so and then she ___HAD GIVEN____ give them up.

7.​ Hardly __HAD HE DONE__ (he, do) an enormous amount of work when his friend __OFFERED____(offer) him to help.
8.​ Sandy ___HAS BEEN__ (be) to Africa several times this year. It’s only June now.
9.John ___HAS ALWAYS WANTED___ (always, want) to go to Australia, but he ___HAS NEVER MANAGED___ (never, manage) to get there.

10.Tracy WILL WAIT (wait) until I FINISH(finish) my work.

11.They HAD GONE (go) two miles before it BEGAN (begin) to rain.

12.​ Where have you been? I ___HAVE BEEN WAITING__ (wait) for you since five o’clock.

13.​ The phone __RANG___ (ring) while Robert __WAS HAVING____ (have) a bath.

14.​ This is the last time I ___ASK___(ask) you that question.

15. I wondered why Tom __HADN'T WRITTEN____ (not, write) letter so long.