Suddenly the idea came to me I might turn to my teacher for help.A. whatB. that C. whichD

问题补充：

Suddenly the idea came to me I might turn to my teacher for help.

A. what

B. that

C. which

D. whom

答案：

A. what

(答案→)B. that

C. which

D. whom

解析：考查同位语从句的引导词。根据句意：我突然想到，我可以向老师求助。从句来解释idea的内容，中不缺任何成分，所以用that引导idea的同位语从句。故答案选B。