—Excuse me sir. The shoes are a bit small for me. —Don’t worry. I’ll change them for asize

问题补充：

—Excuse me，sir. The shoes are a bit small for me.

—Don’t worry. I’ll change them for asize

A. smaller

B. smallest

C. larger

D. largest

答案：

A. smaller

B. smallest

(答案→)C. larger

D. largest

解析：small小的；large大的；句意：打扰了，先生.这双鞋对我来说有点小。——不用担心.我给你换一双大号的。结合语境可知下文中表示和前一双鞋的对比，故用形容词的比较级作定语，故选C。