—Chris is very clever and never wastes any time doing useless things—No he always comes

问题补充：

—Chris is very clever and never wastes any time doing useless things．

—No he always comes first in the examinations

A. wonder

B. question

C. doubt

D. problem

答案：

(答案→)A. wonder

B. question

C. doubt

D. problem

解析：句意：--Chris是聪明从不浪费时间做没有用的事情。--难怪他总是在考试中总是考试第一。这里是固定句式，it is no wonder that +句子，这里省略了it is that，故选A。