Can you teach me the computer?
— _____ do you go swimming with your father, Jane?—About once a week.A. How long B. How many times C. How often
Peter will take part in the boys’_____ tomorrow.A.800-meter raceB. 800-meter racesC. 800- meter- races
— What should we do to prevent the flu?—We should keep our rooms_____ and the air fresh all the time.A. cleaning B. cleaned C. clean
— When did your school hold the sports meet?—Last week. And I _______ the high jump.A. joined B. took part in C. will join
— Must we go to see a doctor at once when we have the flu?—No,_____.A. we mustn’tB. we shouldn’tC. we don’t have to