—Mr. Wang __________ be in the office. The light is still on.—No, he __________
题型：不详难度：来源：
—Mr. Wang __________ be in the office. The light is still on.
—No, he __________ be. Because he phoned me from the farm just now.| A．may; mustn’t | B．mustn’t; mustn’t | C．can’t; can’t | D．must; can’t |
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答案
| D |
解析
| 考查情态动词表推测。must表推测用于肯定句当中，can表推测用于疑问或否定句中。所以答案选D。 |
举一反三
— Must I stay here with you?
—No, you_____. You may go home, but you ______go to the net bar.| A．mustn’t , needn’t | B．needn’t, mustn’t | | C．must, need | D．need, must |
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You’re too tired. You _______ have a good rest.| A．should | B．can | C．may | D．shouldn’t |
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Today is Wednesday. He _______ be at home. He _____ be at school.| A．can’t; can | B．can’t; must | C．mustn’t; must | D．mustn’t; can |
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Susan’s parents bought a large house with a swimming pool. It ______be very expensive.| A．can | B．must | C．mustn’t | D．can’t |
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---Who is the tallest boy? ---It ______ be John. John is of medium height.| A．must | B．needn’t | C．might | D．can’t |
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