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Not until the bell rang in. A. do they come B. did they come C. they came D. cam

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Not until the bell rang in. A. do they come B. did they come C. they came D. cam

Not until the bell rang ________ in.

A. do they come

B. did they come

C. they came

D. came they

 

试题答案

答案:B

解析:
Not until放在句首的时候,其后的主句要部分倒装。

 

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