题目内容
.—— Has Jack finished his homework yet?
—— I have no idea; he ___it this morning.
A.was doing B.had been doing C.has done D.did
.A
解析:
题干没有构成“过去的过去”,不可选B。如选C、D则表示动作已完成,与have no idea相矛盾。过去进行时表示过去某段时间或某一时刻正在进行的动作,不涉及结果,正好附合题干语境。
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题目内容
.—— Has Jack finished his homework yet?
—— I have no idea; he ___it this morning.
A.was doing B.had been doing C.has done D.did
.A
题干没有构成“过去的过去”,不可选B。如选C、D则表示动作已完成,与have no idea相矛盾。过去进行时表示过去某段时间或某一时刻正在进行的动作,不涉及结果,正好附合题干语境。
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