1. 1) mustn’t
2) mustn’t
3) must’t
4) must
5) must
6) must
2. 1) must
2) don’t have
3) could
4) mustn’t
3. 1) had to
2) must
3) had to
4) must
4. 1) have to
2) must
3) had to
4) has to поскольку нет правильного варианта в задании
5. 1) should watch
2) should go
3) should clean
4) should visit
5) should wear
6) should read
6. 1) I think everybody should wash their hands
2) I think you should wake up earlier
3) I don’t think you should buy this expensive dress
7. 1) They don’t have to write a composition
2) I don’t have to work anymore. I won the lottery
3) We mustn’t talk loudly. This is a hospital
4) I have an exam tomorrow. I must study
5) Sara can sing very well
8. 1) You have to go straight 100 m and then turn left.
2) You should take a bus 5
3) You should turn left, then go straight and cross the road.
Объяснение:
2 In the evening I help my Mum to clean the room and towash up after the dinner.
3 It's going to rain heavy but you haven't taken an umbrella or an raincoat
4 What do yoy prefer to do on your days off? I usually get very tired after my work and I really want to have a good rest
5 You'd better stay at home in a such nasty weather. The wind is blowing the rainy clouds in the sky
6 The letters are usually sent on Monday but today they have been sent earlier.
7 We haven't made up our mind where to go this summer yet, but we hope to set off to the Crimea.
8 He said his father would come late as he had much work to do and a meeting afterwards. He didn't know the time it finished.