1) My cousin and her husband have been married since last Christmas. (Past Perfect Continuous. действие было совершено в и продолжается до сих пор).
2) I asked Kate to come with me, but she refused. She already promised to play with her friends. (Past Simple. просто добавляем окончание ed)
3) He gave all his money to me because he trusted me. (Past Simple)
4) The pupil wasn't able to do the translation because he does bot know some special terms. (present simple. ученик не знал и не знает термины. настоящее время без никаких окончаний)
5) If Chris didn't fall in love with Jane he won't give her flowers. (future simple. will+not=won t)
6) I wish I had washed my clothes yesterday. (pr.perfect. глагол have неправильный. его другая форма - had.)
7) I saw her enter the room.
8) Do you want me to make you some tea?
9) Would you like them to change their mind?
10) I've forgotten to buy. cheese. Let's eat without it.
1 a
2 b
3 b
4 a
5 c
6 b
7 b(a)
8 c
9 b
10 c