It has been announced that candidates ______ remain in their seats until all the papers have been collected.  
#90276
A
can
B
will
C
may
D
shall
推荐题目
She ____ the film. She knows nothing about it.
#86975
A
can’tsee
B
can’thaveseen
C
mustsee
D
mustn’thaveseen
Had I known about this computer program, a huge amount of time and energy________.
#87046
A
would have been saved  
B
had been saved
C
will be saved
D
was saved
Online paper-checking requires that more attention _______.
#89641
A
be paid to spelling
B
to be paid to spelling
C
should pay to spelling
D
and spelling be paid to