Book board check in stop off fasten turn back set off come across
1 Please sit down and — your seat belts.
2 We _ on our journey at 9 a.m.
3 We'll in Moscow on the way to China.
4 People with children can — the plane now.
5 The boat will — if the weather's really bad.
6 Tell me if you anything interesting.
7 If you —
flights early, they cost less.
8 How much luggage did you —?
1.fasten 2.set off 3.stop off 4.board 5.turn back 6.come across 7.book 8.check in