It has been announced that candidates       remain in their seats until all the papers have been collected.
#63016
A
shall
B
can
C
should
D
must
推荐题目
One ought ________ for what one hasn't done.
#62937
A
not to be punished
B
to not be puished
C
to not punish
D
not be punished
You ______ park here! Don’t you see “No Parking” beside you?
#63201
A
needn’t
B
mustn’t
C
won’t
D
couldn’t
It’s quite warm here; we __________turn the heating on yet.
#63494
A
couldn’t
B
mustn’t
C
needn’t
D
wouldn’t