#19.1
2 How long are you going for?
3 When are you leaving?
4 Are you going alone?
5 Are you travelling by car?
6 Where are you staying?
#19.2
2 I'm working till 9 o'clock.
3 I'm going to the theatre.
4 I'm meeting Julia.
#19.3
2 I'm studying tomorrow morning.
3 I'm hanging out with my friends tomorrow evening.
4 I'm visiting my grandparents next Sunday.
5 I'm going to the exhibition this Friday.