It is a teacher's responsibility always to hope with learning a boy's character might

问题补充：

It is a teachers responsibility always to hope, with learning, a boys character might be changed.

A. when

B. what

C. that

D. which

答案：

A. when

B. what

(答案→)C. that

D. which

解析：答案：C。句意：老师的职责总是希望一个孩子通过学习可以改变性格。考查名词性从句的引导词。it为形式主语，真正的主语是不定式to hope...，that的引导从句作hope的宾语。