Ответы и объяснения

2014-02-10T20:30:05+04:00
1. has just gone
2. left
3. haven't solved the problem yet
4. have happened
5. has changed
6. have made
7. has covered
8. have fallen
9. did you open...? I opened it...
10. hasn't risen
11. have seen
12. didn't read
13. have stopped
14. have you been
15. have translated
16. went, spoilt
17. have stopped
18. hasn't begun yet