问题标题:
Theprojectrequiresmorelaborthan___becauseitisextremelydifficult.AhasbeenputinBhavebeenputinCbeingputinDtobeputin
问题描述:
Theprojectrequiresmorelaborthan___becauseitisextremelydifficult.
AhasbeenputinBhavebeenputinCbeingputin
Dtobeputin
陈韶华回答:
A
句意为:这项工程要求(比现在)更多的人力,因为它极其困难.
可见时态为现在完成时,排除C(进行时)和D(将来时)
labor不可数名词,谓语用单数,排除B
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