when the door burst .A. Hardly did he collect the papers on his desk; openedB. No sooner

when the door burst .
A. Hardly did he collect the papers on his desk; opened
B. No sooner had he collected the papers on his desk; opened
C. Hardly had he collected the papers on his desk; open
D. No sooner did he collect the papers on his desk; open

A. Hardly did he collect the papers on his desk; openedB. No sooner had he collected the papers on his desk; opened(答案→)C. Hardly had he collected the papers on his desk; openD. No sooner did he collect the papers on his desk; open解析：考查倒装句和时态。Hardly…when…一…就…；该句型中hardly后面要使用部分倒装。根据句意可知使用过去完成时。Open是形容词，在句子中做补足语。句意：他一把桌子上的报纸收起来，门就被推开了。故C正确。

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