Краткое пояснение: Замените don't have to / doesn't have to на needn't. Needn't выражает отсутствие необходимости.
- We needn't go to school tomorrow.
- She needn't buy bread.
- They needn't wear a uniform in this school.
- He needn't hurry.
Ответ: (1) We needn't go to school tomorrow, (2) She needn't buy bread, (3) They needn't wear a uniform in this school, (4) He needn't hurry