—Must we sweep the floor right now?—No , you ________.You can do it laterA. mustn’tB. can’tC. don’t have to
Not only the kids but also the teacher ________. We are worried because time is running out.
My father has a habit of jogging ________ the Dongcheng River for an hour in the evening.
It is said that the terrible weather will ________ for another week.
Frank often wears a mask ________he can keep fit in the foggy and hazy (霾) weather.
Poor Tim is too nervous to start his speech. Someone should remind him________.