If you want to talk to your teacher,you should -----first.

问题描述:

If you want to talk to your teacher,you should _____first.
A.to call her up B.call her up 为什么?
1个回答 分类:英语 2014-12-08

问题解答:

我来补答
B
should情态动词,后面跟动词原形
 
 
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