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题目
题型:不详难度:来源:
He ________ to swim when he was five.
A.canB.couldC.can be ableD.was able

答案
D
解析
can和be able to意思接近,不能同时使用,故不选C,can后跟动词原形,故不选AB,故本题选D。
核心考点
试题【He ________ to swim when he was five.A.canB.couldC.can be ableD.was able】;主要考察你对词法等知识点的理解。[详细]
举一反三
——Must I leave the room now?
——No,you    .
A.needn’tB.can’tC.mustn’tD.couldn’t

题型:不详难度:| 查看答案
–Look at that girl! Is it Susan?
--No, it _______ be hers. She has gone back to her hometown.
A.mustn’tB.can’tC.needn’tD.wouldn’t

题型:不详难度:| 查看答案
I’m very glad I have my own room in my house. I ______ do what I want in it.
A.mustB.have toC.needD.can

题型:不详难度:| 查看答案
---__________ I have a ticket , please?                                          
---Sorry,sir. All the tickets were sold out ten minutes ago.
A.MayB.NeedC.MustD.Should

题型:不详难度:| 查看答案
--Listen! Is it Linda singing in the next room?
--No, it __________ be her. She is still in Shanghai.
A.can’tB.couldn’tC.may notD.might not

题型:不详难度:| 查看答案
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