She told me that it had been worrying her much her hair was turning gray.A. becauseB. if

问题补充：

She told me that it had been worrying her much her hair was turning gray.

A. because

B. if

C. for

D. that

答案：

A. because

B. if

C. for

(答案→)D. that

解析：考查名词性从句。句中it作形式宾语，真正的宾语为that her hair was turning gray。句意：她告诉我，她的头发变白让她很担心。故D正确。