─ Is the woman in white our manager? ─ It ________be her. She has just left for
题型：不详难度：来源：
─ Is the woman in white our manager?
─ It ________be her. She has just left for Shanghai. | A．must | B．may | C．can’t | D．couldn’t |
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答案
| C |
解析
试题分析：句意：——那个穿白色衣服的女人是我们的经理吗？——那一定不是她，她刚离开去上海。
must只能表示肯定的推测，含义是“一定是”，表示否定推测“一定不是”要用can’t，may的意思是可能或可以，couldn’t是过去不能，因此此题选C。 |
举一反三
The Internet is really ________ to us. We can get a lot of things from it.| A．useful | B．difficult | C．different | D．safe |
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--Would you like to visit Kun Ming by yourself this summer vocation?
--I’m not sure. I _____go there with my parents because of the terrible thing at the railway station. |
---Must I finish doing my homework now, Mum?
---No, you ________.| A．can’t | B．may not | C．mustn’t | D．needn’t |
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--It ____ be John’s. It’s ______ small for him. | A．can ’t; much too | B．can ’t; too much | | C．mustn’ t; much too | D．mustn’t; too much |
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—May I take photos in the museum?
—No, you . You obey the rules here.| A．may not; can | B．mustn’t; may | C．can’t; can | D．mustn’t; must |
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