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did the students realize they were mistaken. A.It was until B.It was not until t

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did the students realize they were mistaken. A.It was until B.It was not until t

________ did the students realize they were mistaken.

A.It was until

B.It was not until then

C.Not until then

D.Not until

 

试题答案

答案:C

提示:
这一句后面用到了倒装,显然应该将否定词提前。