It has been announced that candidates ( 候选人)_____remain in their seats until all the papers has  been  collected .   
#89832
A
can
B
will
C
may
D
shall
推荐题目
—Did you pass the driving test?—No.I ________ it,but I had little time practising.
#86355
A
could have passed
B
must have passed
C
can't have passed
D
shouldn't have passed
—What happened to the young trees we planted last week?—The trees ____ well, but I didn’t water them.
#87377
A
might grow
B
needn’t have grown
C
would have grown
D
would grow
This cake is very sweet. You _____ a lot of sugar in it. 
#90559
A
should put
B
could have put
C
might put
D
must have put