So far, many students in the school ______ a lot of prizes in this field .
A. winB. wonC. have won
--- Jack , could you tell me ________ ?
----Sure . In the post office on Green Road ,
A. where you bought the stamps
B. where did you buy the stamps
C. when you bought the stamps
Professor Yi Zhongtian ______ to the Talk Show on CCTV—1 last weekend .
A. invitesB. invited C. was invited
Tony used to ______ to school ,but he is used to _______ to school now .
A. walk ;taking a bus B. walked ;took a bus C. walk ; take the bus
They have already been to the place ____ their ancestors lived .
A. whichB. whereC. when