Fill in the gaps, using must, need’t, have to, ought to, be to, should : 1) she’s crying . she_ be upset. 2) you _buy tickets beforehand. 3) lilly _ come at 3. but she hasn’t come yet. 4) you _ be careful when you cross the street. 5) i_ return to the hotel because of the rain. 6) tommy _ pump up the tires.
