1They / go to bed early last night (+)
=> They had to go to bed early last night
2.We / wear uniform at work today (?)
=> Do we have to  wear uniform at work today
3.James/ water the flowers tomorrow (-)
=> James won't have to water the flowers tomorrow
4.All student / study for the next test (+)
=> All student have to study for the next test
5.You / take the bus to school yesterday (?)
=> did you have to  take the bus to school yesterday