When the seat belt sign goes on everyone should go unfasten their seat belt
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
- You may _____ your seat belt when the seat belt sign is switched off. A: release B: return C: fasten D: adjust
- When can passengers walk in the cabin? A: seat belt sign is turning on. B: the plane is passing the area of turbulence. C: the plane is very bumpy. D: seat belt sign is turning off.
- When to fasten the seat belt?