5. he wasn’t good at mathematics, was he? a) yes, he wasn’t. b) no, he was. c) no, he wasn’t. 6. you like black coffee, a) aren’t you? b) don’t you? c) do you? 7. there was nobody there, a) was there? b) wasn’t there? c) were they? 8. your friends entered the medical academy, a) didn’t they?
b) did they? c) weren’t they? 9. sam doesn’t work hard, a) doesn’t he? b) does he? c) is he?
6)с
7)с
8)b
9)b
Вроде так, но могу ошибаться))