问题补充:
I didn’t understand , so I raised my hand to ask him.
A. what my teacher says
B. what does my teacher say
C. what my teacher said
D. what did my teacher say
答案:
A. what my teacher says
B. what does my teacher say
(答案→)C. what my teacher said
D. what did my teacher say
解析:本题前面的分句为宾语从句,宾语从句的用法为主句为过去时,从句为过去时的一
种,从句的顺序为陈述句的顺序,根据这两点答案应选C。