—Is David coming by train?—He should, but he not. He likes driving his car.
—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