选择方框中的短语,并用其适当形式填空 6.Bob ------------ do his homework tonigh

选择方框中的短语,并用其适当形式填空 6.Bob ------------ do his homework tonight 7,--------------- does Mary watch TV 8,Li Qiang uses the Internet ---------------- 9,My father ------------ very late working last night 10,Cindy drinks mlik ------------ once a day
短语：at least，have to，once a week stay up how often