раскройте скобки, поставьте глагол в Present Perfect.
1. Our son (learn) how to read.
2. Doctors ( cure) many deadly diseases.
3. Scientists ( split) the atom.
4. You (grow) since the last time I sawyou.
5. English (become) one of the most popular courses at the university.
6. Му English reatly (improve) since I took private lessons.
7. I think I (see) that movie before.
8. Не never (travel) bу train.
9. Joan (learn) two foreign languages.
10. you (meet) him?- No, I never (meet) him.
11. you ( see) that movie? - I ( see) that movie twenty times.
12. I think I (meet) him once before.
13. People (travel) to the moon.
14. you (bе) to France? - I (bе) to France three times.
15. James (not finish) his homeworkyet.
16. Bill not (arrive)yet.
1 7. The rain ( not stop ).
18. Mary (love) chocolate since she was а little girl.
19. She (bе) in England for six months