You ______ be polite to the old man.A．shouldB．can’tC．mightD．mustn’t
题型：不详难度：来源：
You ______ be polite to the old man.| A．should | B．can’t | C．might | D．mustn’t |
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答案
| A |
解析
| 考查情态动词。句意“对老人应该有礼貌。”should“应该”；can’t“不能”；might“可能”；mustn’t“禁止，不许”。故选A。 |
举一反三
You’d better _______ too much meat. You are much too fat.
A. not eat B .eat C. not to eat |
When the traffic lights are red, we _______ stop.| A．should | B．might | C．must | D．may |
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—Must I take the medicine every day?
— No, you______.| A．must not | B．may not | C．haven’t | D．needn’t |
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The yellow coat ________belong to Linda because nobody likes yellow except her. | A．can’t | B．may | C．must | D．needn’t |
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