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. seated
B. seating
C. seat
D. to be seating
The pilot asked all the passengers on board to remain ______ as the plane was making a landing. [ ]
A. seated
B. seating
C. seat
D. to be seating