The pilot asked all the passengers on bo
题型:选择题
问题:
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
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