题目列表(包括答案和解析)
It was quite a long time ______ he really realized the serious situation.
A. since B. when C. after D. before
It was quite a long time ______ he really realized the serious situation.
A. since B. when C. after D. before
It was quite a long time ______ he really realized the serious situation.
A. since B. when C. after D. before
It was quite a long time ______ he really realized the serious situation.
|
A．since |
B．when |
C．after |
D．before |
It was quite a long time ________ he really realized the serious situation．
since
when
after
before
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