2. Use have to/don't have to/needn't

Fill in the blanks with have to, don't have to, or needn't:

• He has to keep the room tidy.
• You don't have to buy tomatoes, we have lots of them.
• The car park is free here, so you don't have to pay for it.
• You needn't speak louder, I can hear quite well.
• We have got plenty of time, so we don't have to hurry.
• They have to wear a school uniform on Fridays, but they usually do.