It has been announced that candidates ______ remain in their seats until all the papers have been collected. 
#90070
A
can
B
will
C
may
D
shall
推荐题目
He _______ the best person you had been expecting for the job, but who else _______?
#87031
A
may not be; could be
B
couldn’t be; might be
C
might not have been; could have been
D
mustn’t be; must have been
The teacher requested that they _____their homework on time.
#86827
A
finished
B
could finish
C
finish
D
would finish
-----I thought I ______something burning  . -----Really?
#89834
A
smelled
B
was smelling
C
could smell
D
might smell
How he _______ get out of the prison ______ a mystery.
#87966
A
could; is
B
can; is
C
was able to; remains
D
able to; remain