-Where your friends?
-They are at schoo（1）
A. is B．are C．am
My uncle is a teacher.He ________ me Chinese.
A．teaches B．teach C．teaching
She is ________．
A．a engineerB．engineer C．an engineer
She sells things.She is a ________.
A．teacher B．salesperson C．doctor
She is an actress ________ TV.
A．inB．onC．for
If you enjoy math，you can ________ an accountant.
A．doB．areC．be