问题
选择题
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
答案：C
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。