Помогите пожалуйста с модальными глаголами. Have to, had to, don’t have to, must, mustn’t...

Question

Помогите пожалуйста с модальными глаголами.

Have to, had to, don’t have to, must, mustn’t , must have, might have, should, could

1.We’re trying a new dress code. We …… wear formal clothes on Fridays.
2.You …… touch that button! The whole production line will stop!
3.I’m not sure, but I think I …… made a mistake.
4.Before we agree, we’ll …… study the contract in more detail.
5.Sorry I can’t stay any longer. I really …… go now or I’ll miss my train.
6.If you need the goods urgently, we …… speed up the order.
7.Sorry I’m late, but I …… go to the doctor’s.
8.It …… been embarrassing for you to forget his name.
9.I think we ……accept their offer. It’s the best we’ll get.
10.Luckily, I …… attend the meeting yesterday, so I managed to finish all my paperwork.

Answer 1

1. We’re trying a new dress code. We must wear formal clothes on Fridays.
2. You mustn't touch that button! The whole production line will stop!
3. I’m not sure, but I think I might have made a mistake.
4. Before we agree, we’ll have to study the contract in more detail.
5. Sorry I can’t stay any longer. I really must/have to go now or I’ll miss my train.
6. If you need the goods urgently, we could speed up the order.
7. Sorry I’m late, but I had to go to the doctor’s.
8. It must have been embarrassing for you to forget his name.
9. I think we must accept their offer. It’s the best we’ll get.
10. Luckily, I didn't have to attend the meeting yesterday, so I managed to finish all my paperwork.