Ответ: 1. I haven’t seen my friend since we graduated
from the university.
2. I haven’t been to the theatre since autumn.
3. We haven’t met Petrov for ages.
4. How many English books have you read
since began to study English?
5. Do you know how many schools and hospitals
have been built in your native city since you left there?
6. This actor hasn’t taken part in the
plays since last spring.
7. My son taught to read last year and he has already read many children’s books since then.
8. I have not received letters from parents long time.
9. There have been built many new houses in Moscow since he came here last
time.
10. It’s a pity since that time this writer has not written nothing new.
11. Why haven’t you written us since 1974?
12. In what else museums have you visited
since then?