2) (-) They don't have to wear warm clothes in winter.
(?) Do they have to wear warm clothes in winter?
3) (-) She doesn't have to buy a new coat.
(?) Does she have to buy a new coat?
4) (-) You don't have to learn these rules.
(?) Do you have to learn these rules?
5) (-) We don't have to write this text.
(?) Do we have to write this text?
6) (-) They don't have to come here again.
(?) Do they have to come here again?
7) (-) You don't have to wair for an hour.
(?) Do you have to wait for an hour?
