Your shoes are old. Why not buy a new ?A. one B. onesC. pairD. it

问题补充：

Your shoes are old. Why not buy a new ?

A. one

B. ones

C. pair

D. it

答案：

A. one

B. ones

(答案→)C. pair

D. it

解析：本题考查的是a pair of shoes ，故选C