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youwerebusy,wewouldn'thavebotheredyouwithmyquestions.A.IfIrealizedB.HadIrealizedC.DidIhaverealizedthatD.AsIrealized选哪个?

题目详情
____you were busy,we wouldn't have bothered you with my questions.
A.If I realized B.Had I realized
C.Did I have realized that D.As I realized
选哪个?
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答案和解析
A