Are these your books?--.A. Yes these are.B. No they are. C. No it isn’t.D. Yes they

问题补充：

--Are these your books?

--.

A. Yes ,these are.

B. No, they are.

C. No, it isn’t.

D. Yes, they are.

答案：

A. Yes ,these are.

B. No, they are.

C. No, it isn’t.

(答案→)D. Yes, they are.

解析：句意：这些书是你的书吗？是的，他们是我的书。在Are these/those sth?这一句型中其肯定回答为yes，they are.否定回答为no, they aren’t.故选D。