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-Have they started building a house for you? -Yes, it now. [ ] A. is building B.

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-Have they started building a house for you? -Yes, it now. [ ] A. is building B.

-Have they started building a house for you?

-Yes, it ________ now.

[]A.

is building

B.

has built

C.

has started

D.

is being built

试题答案

答案:D

解析:

由now可知,用现在进行时态。主语是it,应该用被动结构。