Смодальными 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.

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.