—Can you tell me ________? —Sure. I go swimming twice a week. A. how often do you go swimming B. how often you go swimming C. when you go swimming
—Let’s watch TV. —________.
—Hi,can I help you? —________.
Jenny,put on your coat ________ you will catch a cold.
—Can I borrow your dictionary? —Yes,you ________. A.can B.must C.should
—Do you know the song Come on,Haixi? —Yes,and I ________ sing it well. A.must B.can C.need