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 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。
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