You may _____ your seat belt when the seat belt sign is switched off.
A: release
B: return
C: fasten
D: adjust
A: release
B: return
C: fasten
D: adjust
举一反三
- Fasten the seat belt while the Fasten Seat Belt Sign is on.（ ）
- When to fasten the seat belt? A: for take-off B: for landing C: during air turbulence D: whenever the Fasten Seat Belt sign is on
- When to fasten the seat belt?
- Please fasten your seat belt, open the sunshade, and make sure all electronic devices have been _____ A: switched off B: open C: switched on D: closed
- Please fasten your _______. A: belt B: string C: seat belt D: safety belt