题目内容
— Don't put the waste on the ground, young man.
— Oh, I'm sorry. I ________the dustbin there.
A. hadn't seen B. didn't see C. can't see D. wasn't seeing
C
如果描述刚才一瞬间进行的动作用过去进行时,如I wasn't listening,过去某一结果用一般过去时,如I didn't hear it.
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