7b, 8c, 9a, 10b, 11b, 12a, 13b
1.destroyed-active,Past Simple
2.was waiting-active,Past Cont; came-active,Past Simple
3.have provided-active,Present Perfect;
4.are stidied- passive,Present simple passive
5.has been polluted-Present Perfect Passive
1) I can not dance. 2) I am not a dance. 3) They can not teach
2правильно
3правильно
4неправильно
5правильно
6правильно