While listening to the concert, the audience is required to remain ______ and keep quiet.
#93668
A
seated
B
to be seated
C
seating
D
to seat
推荐题目
___ time, he’ll make a first-class tennis player.  
#92431
A
Having given
B
To give
C
Giving
D
Given
Don’t you really believe that such men ought _____?
#98239
A
to get rid
B
to get rid of
C
to be got rid
D
to be got rid of
One learns a language by making mistakes and ________them
#91217
A
correct
B
to correct
C
to correct
D
correcting