The house is dirty because it ________ since they moved out.A．doesn"t cleanB．is

题型：不详难度：来源：

The house is dirty because it ________ since they moved out.

A．doesn"t clean	B．isn"t cleaned
C．hasn"t cleaned	D．hasn"t been cleaned

答案

解析

D 考察动词时态和语态。句义：—房子很脏，因为自从他们搬出去以后就没有打扫过。空格处于主语the house之间是逻辑上的被动关系，由此可以排除AC项。根据句中的状语since they moved out，并结合语境可知，空格处应该使用现在完成时，表示过去发生的某一动作对现在语境造成的影响或结果。故D正确。

举一反三

I know little about the accident because not much ______ about it up to now.

A．has said

B．has been said

C．had said

D．had been said

题型：不详难度：| 查看答案

Barrack Obama __________ President of the United States since 2010.

A．became a

B．has become a

C．has turned

D．has been

题型：不详难度：| 查看答案

The famous reporter, who is said to go back to America next month, _____in China for almost twenty years.

A．lived

B．was living

C．has lived

D．had lived

题型：不详难度：| 查看答案

Minister Bill De Blasio in office fewer than 48 hours when he came face to face with his biggest challenge in his life．

A．has been

B．had been

C．would be

D．is

题型：不详难度：| 查看答案

Years of fighting have ______ the area ______.

A．remained; in ruins

B．left; in ruins

C．remained; in ruin

D．left; in ruin

题型：不详难度：| 查看答案