—Henry, ________ is your job?
—I’m a policeman.
how
where
what
Mary told me to wait for her at the school gate, but she didn’t appear at all.
This is the best present that I have received.
She is sad. Why don’t you cheer her up?
--- I don’t know when ______ tomorrow. --- I will call you as soon as he ______.
The number of foreign students in China ______ increased.