试题:
The windows _____, so you need not wash it again.
A.is washedB.was washedC.have been washedD.will be washed

答案:

我来补答
C
考查谓语动词。The windows作主语谓语应用被动语态,根据语境you need not wash it again “不必洗”所以应用完成时的被动语态选C
 
 
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这些题目你会做吗?