when you want to talk to your teacher you should _ _first.A. called to herB. called up he

问题补充：

when you want to talk to your teacher ,you should _ _first.

A. called to her

B. called up her

C. call her up

D. called her up

答案：

A. called to her

B. called up her

(答案→)C. call her up

D. called her up

解析：should 后接动词原形，故选C