1. I must go now because I am already late for my class.
А. must
2. They don't have to do their homework today because it is a holiday at the school.
C. don't have to
3. I ought to help you with your shopping because you have a lot of bags.
B. ought to
4. When will you be able to come and see us in our new house?
B. be able to
5. Can you come over for dinner on Friday night? I really want to hang out with you, so I hope you can come.
A. Can
6. He wouldn't give me a straight answer. He avoided my questions the whole time.
B. wouldn't
7. I couldn't understand him because I don't speak French. So, we used body language to communicate with each other.
B. couldn't
8. You should have called me first. I would have picked you up from the auto repair garage.
A. should have
9. We've worked long and hard today. Shall we call it a day?
C. Shall
10. I can see that you have a hole in your sneakers. You need a new pair of shoes.
A. can
1.This letter was received (by us) after his departure.
2. Have you ever been attacked by dogs?
3. Honey is gathered by bees from flowers.
4. The ship was driven against a rock by the storm.
5 Whom was the circulation of blood discovered by?
6. Delicios fruit ice cream is being sold there now.
7.The way out of the wood was shown to us by the old man.
8.She was offered some interesting work (by them).
9. New medicine was prescribed to her by the doctor.
10. He is often spoken about (by them).
11. This funny animal was laughed at by everybody.
12.You have been looked for the whole morning (by us).
13.Strict discipline will be insisted on (by us).
14. Three foreign languages are taught at this school.
Подробнее - на -
Он не купался в озере. Было слишком холодно. Это время. В первом предложении у нас есть глагол swim, чтобы сделать отриц предложение, надо добавить did not (did вс глагол в Past Simple). Во втором предложении надо употребить глагол to be в времени. be >> was
ответ - a) didn't-was