All the passengers _____ board the plane should fasten their seat belts.
A: to
B: in
C: on
D: at
A: to
B: in
C: on
D: at
举一反三
- 中国大学MOOC: All the passengers _____ board the plane should fasten their seat belts.
- Passengers must fasten their seat belts during take-off or landing.
- We were told to fasten our seat belts before the plane took off.
- 5.The pilot asked all the passengers on board to remain________ as the plane was making a landing. A: seat B: seating C: seated D: to be seating
- Before the flight takes off, all the passengers are asked to (fast) ______ their seat belts.