My aunt is a worker. She _____ in this factory for 20 years.
A.works B.worked C.is working D.has worked
Steve _____ us if he comes to Beijing next month.
A.visits B.visited C.has visited D.will visit
—What is your father doing, Mike?
—He _____ in the garden.
A.waters B.watered C.is watering D.has watered
—Where did you go last weekend?
—I _____ to the Beijing Expo Park.
A.go B.went C.am going D.has gone
—— do you usually go to school, Mary?
——By bike.
A. When B. How C. Where D. Why
—_____ you sing an English song?
—Yes, I can.
A.Can B.May C.Must D.Need