Tom ________ his homework on Sundays.
A．doesn't doB．doesn't C．isn't do
________ mother is a doctor.
A．She B．He C．Her
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