单选题It was not _____ midnight that they discovered the children were not in their beds.AbeforeBatCafterDuntil
单选题
It was not _____ midnight that they discovered the children were not in their beds.
A
before
B
at
C
after
D
until
参考解析
解析：
此题为强调句型“It was not until ... that”，用来表示时间的名词和时间的状语从句。
此题为强调句型“It was not until ... that”，用来表示时间的名词和时间的状语从句。
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