Ответ:

1. I (have seen) three police cars this morning.

2. After he (had arrived) home, he (unpacked) and (went) to bed early.

3. A: What's wrong?

B: I (have broken) a glass!

4. My grandparents had only (known) each other for a few months before they (got) married. 5. I (have been) in London for three years. I love it

here.

6. We (saw) Julie last night.

7. He (had been) a teacher before he (became) a musician.

8. When the boss (had walked) into the room, we (knew) someone was going to get fired.

9. The children (broken) a window in the school

last week.

10. He (saw) that film last year.