Вот, нашёл (сам не знаю, правильно ли)
Задание1: could
Задание4:
1)shouldn't
2)must
3)should
4)needn't
5)had to
6)should
7)shouldn't
8)must
9)mustn't
10)had to
Paying more attention to your health. will help you to live a happy long life
I visited the gym not so long ago. Visited him with his best friend in the city of Almaty. I really liked the gym, starting from the locker room. Everything was clean, beautiful, the trainer was very kind, clearly and well explained to us how to do the exercises, and how many approaches should be for our height and weight. After all, we were very tired, fitness bars were sold there, so we immediately bought and ate them. I really liked the gym, I would like to go back there again.
1. smoking
2. coming
3. carry
4. dancing
5. laughing
6.to get
7. to see
8. getting
9. opening
10.locking
11.to buy
12. go
13. doing
14. repairing
15. to go
16. to have
17. to see
18. building
19. to take
20. to be