§10. Exercise XXXIV, p. 186

1. They must be speaking German, but I don't understand much. 2. It must have taken her a lot of time to get here. 3. He is not likely to object to our proposal. 4. The match is not likely to take place. 5. The accident must have happened due to his carelessness. 6. He must have failed to notice her leave the hall. 7. We must have been driving about an hour but the camp is nowhere to be seen. 8. He said that I must know her. I met her at the conferences. 9. Probably she

hadn't been sent an invitation card, that's why she didn't come. 10. His mother is in hospital again. She must be

seriously ill. 11. He must be waiting for us at the Institute.

12. He must have forgotten that he promised to come. 13. Pro-

bably he doesn't want to interfere. 14. He must have been sleeping for about three hours. 15. The parcel is likely to be sent before the fifth of July. 16. You must have never put on this dress. It's quite new. 17. They must have quarrelled. I haven't seen him at our house lately. 18. Where is Nick? — He must have gone sightseeing. 19. She must be staying with her friends. She wrote that was going to spend her holiday with them. 20. Where is the letter? — It must have been posted already. 21. He must have failed to recognize her. She has changed so much. 22. The goods must have been packed very carelessly. 23. They must have been informed about it some days ago. 24. She must have been glad to see you. 25. I don't see the documents anywhere. He must have taken them with him. 26. Probably it wasn't done in time. 27. It is quiet in the house. The children must be at school. 28. She has the most beautiful garden in the village. She must be proud of it. 29. She can't/couldn't have married him. She didn't use to like him. 30. Can/Could she have gone to the match? I thought she didn't like football. 31. Can/ Could you have been sleeping all this time? It's three o'clock already. 32. He can't/couldn't have left without asking permission. It isn't like him. 33. She can't/ couldn't have said that. She is always so tactful. 34. He must have already left. -

/He can't/couldn't have left without seeing me. 35. Can/Could he have received my letter already? 36. Can/Could he have failed to receive my letter? 37. They can't/couldn't be working in the garden now. It is raining heavily. 38. No, I don't believe it, she can't/couldn't have deceived me. 39. Your friends can't/couldn't have failed to help you. 40. Can/Could he have met her before? 41. Can/Could you be indifferent to politics? 42. He can't/couldn't have broken his promise. 43. They can't/couldn't have noticed us. We were rather far from them. 44. They can't/couldn't have failed to notice us. We were quite near. 45. Evidently he was not informed

that the meeting had been put off. 46. Evidently the figures haven't been checked. 47. He must have received our telegram and he may come tomorrow. 48. This book may/might have seemed boring to him, but he must have read it carefully as he remembers all the details. 49. He said that he might return in May. 50. If all the measures had been taken, this might not have happened. 51. Can/Could he have said that? He must have been very angry with you. 52. Probably my words didn't convince him. He went on arguing. 53. You needn't have gone there. They could/might have come themselves. 54. Can/Could you have believed them? They must have played a joke on you. 55. I can't understand why Ann didn't come to the meeting. She can't/ couldn't have forgotten about it; she must have fallen ill. 56. She can't/ couldn't have read this book in two days; she may/might/ could only have looked it through. 57. I can't/couldn't have lost the ticket, I might/may/could have put it into my bag.

58. He couldn't get the book, because the library was closed.

59. He can't/couldn't have got the book; the library was closed. 60. Where's the key? — I don't know. Olga might/ could/may have taken it by mistake. — She can't/couldn't have taken it. She had nothing in her hands when she was leaving. 61. He may/might not have been there yesterday. 62. Could/Can he have been there yesterday? 63. He can't/ couldn't have been there yesterday. 64. Can/Could he have failed to prove his point of view? 65.1 couldn't help thinking about it.