Complete the dialogue with the correct form of have to + verb.

Alan: I'm going home. See you tomorrow.

Jeff: Are you going already? What time do you have to be (you/be) at home?

Alan: I can stay out longer but I'm just tired.

Jeff: Why? You haven't got a job.

Alan: I know but I have to catch (my sister/catch) a train at 8 o'clock. I have to drive (I/drive) her to the railway station.

Jeff: You don't have to take (You/not/take) her. She could go by bus.

Alan: She's got a heavy suitcase to carry. Anyway, the buses don't start until 8 on a Saturday.

Jeff: That's true. Why do you have to leave (she/leave) so early?

Alan: She's going to Spain. The plane leaves at 11.