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题目
题型:不详难度:来源:
She __________ know the answer, but I"m not sure.
A. can            B. may              C. must
答案
B
解析

试题分析:句意:她可能知道答案,但是我不确定。must,can(could),may(maight) 可以表示猜测,must 表示肯定猜测,用于肯定句,肯定……,一定……;can’t,表示否定猜测,肯定不……,另外can(could),may(maight),表示可能性猜测,可能……。根据but I"m not sure.可知是可能性猜测。根据句意,故选B。
核心考点
试题【 She __________ know the answer, but I"m not sure.A. can            B. may      】;主要考察你对词法等知识点的理解。[详细]
举一反三
- Must I hand in my exercise book now, Mr. Zhao?
- No, you  __. You may give it to me tomorrow.
A. needn"t                B. mustn’t                C. can"t
题型:不详难度:| 查看答案
–Dad, _____ we wait until the light becomes green?
--Yes, we ______ . That’s the traffic rule.
A.need, canB.shall, must
C.must, have toD.can, need

题型:不详难度:| 查看答案
-Shall we go hiking this Sunday? -Sorry, I _______. I’ll have to take a piano lesson.
A.may notB.can’t
C.needn’tD.mustn’t

题型:不详难度:| 查看答案
— It’s the office! So you        know eating is not allowed here.
— Oh, sorry.
A.mustB.willC.may D.need

题型:不详难度:| 查看答案
— Excuse me , ______ you take a photo for us?
— Sorry, I can’t.
A.canB.need C.mustD.should

题型:不详难度:| 查看答案
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