Поставьте глаголы, данные в скобках, в нужную форму.
1. please be quiet, because i (try) to concentrate.
2. hundreds years ago the scientists (discover) that the earth (go) round the sun.
3. i feel a bit hungry so i think i (get) something to eat.
4. we won't start dinner until my mother (arrive).
5. you'll recognize her easily when you (see) her: she (wear) a yellow hat.
6. my daughter usually (take) a sandwich for lunch, but yesterday she (have) a cake.
7. i'll send you a postcard when i (be) on holiday.
8. this time last year i (live) far away from this place
9. i (read) seven now novels this summer.
10. i didn't want to come to the cinema because i (already/see) the film twice.
11. when i arrived at the party me friend (already/go) home.
12. i (watch) the film when he came.
13. as soon as dinner (be) ready i (call) you.
14. everyone (be) very surprised if he (come).
15. i learn english. i (learn) it for six years.
16. i (graduate) from the university.
17. up to now i (not/visit) any foreign country.