I failed in the final examination last term and only then __ the importance of studies.

I failed in the final examination last term and only then __ the importance of studies.
A.I realized\x05B.I had realized\x05C.had I realized D.did I realize
为什么不能选A呢?
英语人气:986 ℃时间:2019-08-22 10:38:43
优质解答
I failed in the final examination last term and only then __ the importance of studies.A.I realized\x09B.I had realized\x09C.had I realized D.did I realize选D这是一句only引导的状语从句放句首引起的部分...
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