ones face fell 还是 ones face drops

Her face _______ when I told her the Bad news.

A. fell B. dropped

请问怎么样选择？

最好答案是填 fell。face与fall搭配，表示脸色沉下来，意思是“不开心”“生气”“伤心”等。句意：

Her face fell when I told her the bad news. 我告诉她这坏消息时，她的脸就沉了下来。

又如：

His face fell when he read the headlines. 他读大标题时脸沉了下来。

注：有时也用 drop，但非常不普通。