He bought a coat for $2000,___ ___ his father was angry.

问题描述:

He bought a coat for $2000,___ ___ his father was angry.
标答是about which,可以理解.(固定搭配be angry about sth)
疑问是for which,总觉得这个也可以填…(原因状语从句his father was angry for sth)
你聪明的,感激!

angry for 这个搭配的却是有的,但是你记得不全,完整的写法是 be angry for doing.
如:She was angry for her mother's peeping at her diary.angry for 后面只能接动名词.故 angry for which错误.