16. You have to do your homework every day. A. Your homework has been done every day. B Your homework has to do by you every day. C Your homework has to be done every day. D Your homework have to be done every day. 17. You shouldn’t tell her the news. It might kill her. A. She shouldn’t be told by the news. She might be killed. B. The news shouldn’t be told her. She might be killed. C. She shouldn’t be told the news. She might be killed. D. She shouldn’t been told the news. It might be killed. 18. It wasn't obligatory to submit my assignment today. A. My assignment must have been submitted today. B. I needn't have submitted my assignment today. C. My assignment was required to submit by today. D. I mustn't submit my assignment today. 19. It's time we left for the disco. A. We may leave for the disco now. B. We needn't leave for the disco now. C. We should leave for the disco now. D. We must have left for the disco now. 20. It was a mistake of you to lose your passport. A. You shouldn't have lost your passport. B. There must be a mistake in your passport. C. You needn't have brought your passport. D. Your passport must be lost. 21. My car keys are possibly in the kitchen. A. My car keys should be put in the kitchen. B. My car keys cannot be in the kitchen. C. I don’t know whether my car keys are in the kitchen. D. My car keys might be in the kitchen. 22. Is it possible for me to come to your house at about 7pm? A. Must I come over to your house at about 7pm? B. Could I be coming to your house at about 7pm? C. Can I come to your house at about 7pm? D. Will I come to your house at about 7pm? 23. You must never take off your helmet while you are riding a motorcycle. A. If you are riding a motorcycle, you needn’t wear a helmet. B. When you are riding a motorcycle, wearing a helmet is not a must. C. You needn’t wear a helmet whenever you are riding a motorcycle D. Helmets must be worn at all times when you are riding a motorcycle 24. I have done this math problem at least twenty times, but my answer is wrong according to the answer key. A. The answer in the book should be wrong! B. The book needn't have a wrong answer. C. There is a wrong answer in the book. D. The answer in the book must be wrong! 25. Can you tell me directions for the station near here? A. Would you tell me where to get to the station near here? B. Could you tell me how to get to the station near here? C. Could you tell me what to get to the station near here? D. Must you tell me the way to get to the station near here? 26. A: John passed his exam with a distinction. B: _______. A. He was too lazy to succeed B. He can't have studied very hard C. He must have studied very hard D. He needs studying harder 27. I often get up early in the morning. A. I’m used to getting up early in the morning B. I’m used to get up early in the morning. C. I used to get up early in the morning D. I used to getting up early in the morning.