It worried her a bit her hair was turning grey. A. whichB. thatC. ifD. for

问题补充：

It worried her a bit her hair was turning grey.

A. which

B. that

C. if

D. for

答案：

A. which

(答案→)B. that

C. if

D. for

解析：主要测试主语从句。分析句子结构可知句子中用了形式主语it，句子的译文为：她的头发逐渐变白让他非常担心。答案为B。