The pilot asked all the passengers on board to remain ______ as the plane was making a landing. 
#93163
A
seat
B
seating
C
seated
D
to be seating
推荐题目
Unless________ to speak, you should remain silent at the meeting. 
#94058
A
invited
B
inviting
C
being invited
D
having invited
 With all the problems ________ as expected, the manager felt rather satisfied.
#90459
A
had been settled
B
being settle
C
settled
D
to settled
 --Why do you have a _______ look? --Because you almost _______ me out of life by your _______ mask.
#97157
A
frightening; frightened; frightening
B
frightened; frightening; frightened
C
frightening; frightening; frightened
D
frightened; frightened; frightening