§11. Exercise VII, p. 207

1. It's 5.30. The guests should/ought to be here soon. 2. I think you've understood what you have (are) to do. This homework shouldn't/oughtn't to take you too long. 3. Do you think Rita will pass the exam? — Well, she should/ ought to pass it. She has studied hard. 4. Do you think Rita has passed the exam? — She should/ought to have passed it. She has studied hard. 5. My question might/may puzzle you, but still I'd like to ask it. 6. He must have told them nothing

about it. 7. You should/ought to read your composition once again. There must be some mistakes there. 8. You shouldn't have talked to him like that. He might/could have been hurt. 9. The party ought to/should be interesting. The students have been preparing it for such a long time. 10. It's not funny at all. You ought to be more serious. 11. He should/ought to have received my letter. I sent it a week ago. 12. There is no answer. He may/might not have returned from work yet. 13. I could/ might have done it long ago if I had known that it was so urgent. 14. It's a story by O'Henry. It ought to/should be interesting. 15. There must be nobody there. 16. They can't/ couldn't have returned from the zoo. It's their first visit there and they may/might stay there for a long time. 17. They may/ might have been at the party but I didn't see them. 18. Where is my key? — You must have lost it. — I can't/couldn't have lost it. I may/might/could have left it in the pocket of my overcoat. 19. They were afraid that they might be asked why Tom hadn't come with them. 20. He can't/couldn't have cheated them, he is an honest man. 21. You shouldn't have bothered the professor. I could/might have given you all the necessary information. 22. He is her brother. He ought to/should know her address. 23. It's 10 a.m. They should/ought to have already arrived in London. 24. I'm to take this exam in a week. 25. Though it's a very unpleasant mission I feel I ought to tell you the truth. 26. She shouldn't have said such things in her child's presence. 27. I saw this book not long ago. It should/ought to be here, on the top shelf. 28. Do you think you'll come home late tonight? — I don't think so. I should/ ought to be home at the usual time.

§12. Exercise VI, p. 212

1. You might/could haven given your sister a present. Why didn't you? She was offended. 2. You might/could come on time. Why are you always late? 3. You might/could help me carry this heavy suitcase, Nick. 4. At last you have come! You might/could have come earlier, you knew I was ill. 5. You might/could have returned earlier and spent the evening

with the child. 6. You weren't all that busy. You might/ could have helped us. 7. He might/could do it for you. It isn't difficult for him. 8. You might/could be more polite to her. 9. You might/could have let me know that the meeting was put off. Why didn't you? 10. He might/could have said something in my favour. 11. She was worried. You might/ could have phoned her. 12. You might/could have waited for me five minutes. It isn't my fault that I was late. 13. I may/might as well be off. 14. I may/might just as well stay home. 15. The medicine didn't do me any good. I might as well have drunk water instead of it. 16.1 may/might as well wait a little. 17. I may/might as well send him a telegram. 18.1 didn't enjoy the outing at all. I might just as well have stayed in town.