--There is still a copy of the book in the library. Will you go and borrow ?I’d rather

问题补充：

--There is still a copy of the book in the library. Will you go and borrow ?

--I’d rather buy in the book store.

A. one; one

B. it; one

C. one; it

D. it it

答案：

A. one; one

(答案→)B. it; one

C. one; it

D. it it

解析：it特指上文提到过的具体的某物；one指上文提到过的同类事物中的一个，是泛指。第一空指的是图书馆的那本书，指的是同一本书，故用it.第二空指的是去书店买本新书。故选B。