難度：★  考點：情態動詞的使用

　　1.-Is that your teacher?

　　-That_____be Mr.Wang.He has gone to Japan with his wife.

　　A.can't  B.mustn't  C.may not

　　2.-Shall we take a taxi?

　　-No,we.It's not far from here.

　　A.can't  B.mustn't  C.shouldn't  D.needn't

　　3.-Who is that?

　　-It_____be Shirly.Only she is in red today.

　　A.could  B.may  C.must

　　4.－_____your brother speak Japanese?

　　－Yes,he has learnt it in Tokyo for three years.

　　A.Should  B.Must  C.Can  D.May

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