Mr. Smart’s job is _______.
―Did you see Mr. Li when you were in France?―No, when I ______, he ______ to Canada.
His sister wanted to have him _____ the radio, but he had had it _____ already.
Simon likes playing ______ chess, while her brother is interested in playing _____ guitar.
—I’m very worried about tomorrow’s math test. I’m afraid I can’t pass this time.—______! I’m sure you’ll make it.
-- _____is that man over there?--- He is a doctor.