§8. Exercise XX, p. 122

1. You ought never to have married me, David. It was a great mistake. 2. I'm sorry. I shouldn't have said that. 3. You'd better stay at home. It looks like rain (raining). 4. I should have invited him too. 5. I think you ought to show more respect for your elders. 6. Morris said that if it was a duty it ought to be done. 7. You ought to be ashamed of yourself for using such wicked words. 8. She deserted me. She ought to pay for it. 9. You ought to have chosen a more suitable time to tell me. 10. When is he going back? — How should I know? 11. It's his own fault. He ought to have divorced you when he could. 12. You should buy this dress. It suits you. 13. You'd better not go there alone. 14. Well, you were right. I shouldn't have done it that way. 15. Why didn't you come yesterday? You ought to have phoned me if you were busy. 16.1 wanted a copy of the letter, so I typed it twice. — You needn't have typed it twice. You could have used a carbon. 17. You shouldn't have mentioned that in his presence. 18. You needn't phone her. She has already come. 19. You shouldn't spoil your eyes. Switch on the light. 20. You should speak to the manager once again before you go to London. 21. You'd better go and speak to him now while he is still here. 22. We'd better not tell Ann. She'd get angry. 23. He's a lawyer and he ought to know such things. 24. They must do as they are told. 25. You ought to make your own living. 26. You mustn't strike a match. The room is full of gas. 27. He said that I was not to/mustn't open the door. 28. Should she take up sports seriously? — I think so. 29. You look tired. You should go out of town for the weekend. 30. You mustn't get up so early. You'll wake up everybody. 31. He said that we were to meet him at the station. 32.1 thought you ought to know about it. 33. They shouldn't allow parking here: the street is too narrow. 34. You have to wear a uniform on duty, don't you? 35. She said that I shouldn't have acted like that. 36. She should be told the news as soon as possible. 37. She should have been told the news a long time ago.

§9. Exercise XXII, p. 153

1, Where's Tom? — He may/might/could be in the library. 2.1 wonder why Bill isn't here. — He may/might/could still be waiting for a bus. 3. Do you think the plane will be on time? — I don't know. It may/might/could be delayed by fog. 4. He may/might not be driving the car himself. 5. I wonder how Tom learnt about Ann's engagement. — He may/ might/could have heard it from John. 6. He may/might emigrate. 7. It's five o'clock. The meeting may/might/could have finished already; let's wait a little, he may/might come soon. 8. He may/might/could have seen her at the concert, but he may/might/could have been mistaken. He's too short­sighted. 9. He may/might/could have called on me yesterday, but I wasn't at home. 10. She may/might not have received our telegram. 11.1 thought if his watch was there, the money might/could be there too. 12. The TV set may/might/could have been repaired already and we may/might be able to see the film. 13. I may/might not be able to go to the concert today. 14. Victor and Helen aren't at home. They may/might/ could be in the pub. 15. It may/might rain towards evening. 16. They may/might not have been in the town yesterday. 17.1 may/might/could have been listening to music. I didn't hear the telephone ring. 18. He may/might not have noticed you, that's why he passed without greeting you. 19. She may/might/could have been hurt by your tone. You ought to/should be more tactful. 20. Don't take the book to the library; you may/might need it for your report. 21. She wasn't at the party. She may/might not have been invited. 22. Why isn't he here? — He may/might not know how to get here. 23. She was afraid she might have forgotten to switch off the electric iron before she left the house. 24. They may/ might not have come yet. 25. He may/might not believe you. 26. He said that he might hire a car. 27. I knew that we might have to wait at the frontier. 28. Tom may/might lend me the money. 29. Do you think he may/might not be able to pay? 30. They may/might/could be working at the same problem. 31. Good news! I may be offered a job soon. I had an interview at an engineering firm yesterday.

10. Exercise VI, p. 167

1. He has a house in London and another in Paris, so he must be rich. 2. I keep meeting him on the bus. He must live/must be living nearby. 3. He must have taken sleeping pills last night. He didn't wake up till lunch time. 4. What explosion? I didn't hear any. — You must have heard it! The whole town heard it. 5.1 waited under the clock! — So did I, but I didn't see you! We must have been waiting under different clocks. 6. There's a lot of noise from upstairs. It must be Tom. — Why should it be Tom? Other people use that flat too. 7. You haven't eaten anything since morning. You must be hungry. 8. John has got married! — You must be joking/kidding! 9. You must be tired after the journey. 10. I hear that your examinations are next week. You must be studying hard at the moment. 11. The phone rang but I didn't hear it. I must have been sleeping. 12. I made a lot of noise when I came home. You must have heard me. 13. I haven't seen Jim for ages. He must have gone away. 14. When I woke up this morning, the light was on. I must have forgotten to turn it off. 15. She knew about our plans. She must have overheard our conversation. 16. The letter must have been delivered in the morning. 17. Look! There's something lying on the table. He must have left a note for you. 18. She must be about twenty-five now. She was at school with my sister. 19. This article must have been written five years ago. 20. I did not see Jim but I knew he must be waiting somewhere. 21. What a wonderful TV set! It must have been expensive. 22.1 wonder who took the money. — It must have been Tom. He's the only one who was there. 23. I waited about half an hour, and was just thinking that something must have happened to Kathy when she arrived in a taxi.