His mother _______ since his father ___________.
—What should I do, doctor? —___healthy, you should take more exercise.
-- _____is that man over there?--- He is a doctor.
Have you ever been to the square _____ was built last year?A. which B. where C. when D what
---Is Lisa a boy’s name or a girl’s name?---______________.
—Do you have to hold our English party in the classroom?—Well. I don’t know ______if not there.