I was shocked by his behavior (   )his family last week.

A.on

B.at

C.towards

答案是C，我感觉AB都对，这种题就是固定搭配么？

如果AB也能说得通，那么严肃的考试会有这种不严谨的题么?

谢谢老师。

回答如下：

单词behavior是名词意思，行为，举止，表现方式，态度

(1) behavior towards +名词/代词，意思对....态度

His behaviour towards her was becoming more and more aggressive.  
他对待她的态度越来越蛮横

He always shows haughty behaviour toward his colleagues.   
他对同事总是表现出傲慢的态度