I know nothing about our teacher______ he has been teaching for years.

问题描述:

I know nothing about our teacher______ he has been teaching for years.
I know nothing about our teacher______ he has been teaching for years.
A.besides
B.except
C.except for
D.except that
正确答案是D.

选项A、B、C后面都不能跟句子,只有D后面可以跟句子,题目中是个句子,所以只能选D