1. If Liz didn't go to bed so late, she wouldn't be tired all the time.
2 I'd be surprised if Ann came to see us now.
3 If I'd known you were busy, I wouldn't have disturbed you.
4 If you hadn't provoked the dog, it wouldn't have attacked you.
5 They would be upset if I told them what happened. OR ... what had happened.
6 I wouldn't have got so wet if I'd had an umbrella.
7 If he hadn't been so nervous, he wouldn't have failed.
Watched
Tim Washed
Didn't water
Did you visit
Didn't play
didn't cook
Helped
Did John go to
Didn't listen
Did you dance
Небо чистое,я могу видеть звезды
1. are, arent
2. are, arent
3. s
4. is, isnt
проверьте ещё раз по правилу в учебнике
are- с местоимениями we, you, they и множественное число
is- с местоимениями he, she, it и единственное число