中国大学MOOC: The flight attendants will show all passengers the use of _____________, the location of the emergency exits on board.
举一反三
- The flight attendants will show all passengers the use of _____________, the location of the emergency exits on board. A: life vest B: oxygen mask C: seat belt D: All above
- 中国大学MOOC: All the passengers _____ board the plane should fasten their seat belts.
- 中国大学MOOC: All flight ____ because of the snowstorm, many passengers could do nothing but stay at the airport.
- how can flight attendants provide meals to visually impaired passengers ？
- 中国大学MOOC: Passengers are required to turn off all electronic and __________(数码的) devices during a flight journey.