So hard-working that he sets a good example to all the other classmates. A. he isB. is h

问题补充：

So hard-working that he sets a good example to all the other classmates.

A. he is

B. is he

C. does he

D. he does

答案：

A. he is

(答案→)B. is he

C. does he

D. he does

解析：so…that…结构中，so置于句首时，引导的主句要部分倒装，排除A,D；且hard-working是形容词，所以和系动词连用。选B。