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
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But for their help,we ______ the program in time.
#90428
A
can not finish
B
will not finish
C
had not finished
D
could not have finished
Mother insisted that the child's hands ______ before dinner.
#89461
A
should wash
B
be washed
C
had been washed
D
would be washed