Since her only child passed away a few years ago, family has been a topic for her.
A. forbid
B. forbade
C. forbidding
D. forbidden
网友回答
A. forbid
B. forbade
C. forbidding
(答案→)D. forbidden
解析：句意：因为她唯一的孩子在几年以前去世了，所以对于她来说，家庭成了一个被禁止的话题。这里修饰“topic”，故用形容词，选D。