( )（4）Miss Zhang is a . She helps sick people every day.
A.nurse B.driver C.teacher
_____ she need a computer.
A. Do B. Does C. Is
I am sending these postcards ____ Canada.
A. in B. on C. to
Where _____ the traffic lights?
A is B. are C. have
We buy stamps ______ .
A. at the post office B. in a bicycle shop C. in a restaurant
She ____ a stamp for his letter
A. need B. needs C. to need.