—Is that a book on painting? If so I want to borrow —Yes it is．A. thisB. itC. oneD. the

问题补充：

—Is that a book on painting? If so, I want to borrow．

—Yes, it is．

A. this

B. it

C. one

D. the one

答案：

A. this

(答案→)B. it

C. one

D. the one

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