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4．--It must be John who is in the office．--I'm sure it be John．I saw him off at the railway station just twenty minutes ago．A．won't B．mustn't C．can't D．needn't 【查看更多】

 

題目列表(包括答案和解析)

--It must be John who is in the office．

--I'm sure it ________ be John．I saw him off at the railway station just twenty minutes ago．

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

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－It must be John who is in the office．

－I'm sure it ________ be John．I saw him off at the railway station just twenty minutes ago．

[　　]

A．won't

B．mustn't

C．can't

D．needn't

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