Всем привет, помогите, пожалуйста, сделать английский

Задание . Заполните пропуски глаголами can, can’t, couldn’t, could, was/were able to

1. They didn't want to buy our goods but we … to persuade them.

Задание 4. Заполните пропуски глаголами must, had to, mustn’t, needn’t , should, shouldn’t

1. Keep these documents in a safe place, you … lose them.
2. We … write the letter now, we can do it tomorrow.
3. I think everybody … learn a foreign language.
4. We have lots of time, we … hurry up.
5. He doesn’t usually work on Saturdays but last Saturday he … work.
6. John is our potential customer. You … meet him.
7. You … tell Marilyn what happened. I don’t want her to know.
8. I … go to the post office, I need some stamps.
9. If this hotel is too expensive for you, you … stay there.
10. I … go to the bank yesterday to get some money.

Задание1: couldЗадание4:1)shouldn't2)must3)should4)needn't5)had to6)should7)shouldn't8)must9)mustn't10)had to