—It has been nation-widely required that every student ______ have daily exercise for one hour.—Yeah.It is high time that we ______ special attention to physical exercise.
#86879
A
must;should pay
B
should;paid
C
will;shall pay
D
need;pay
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I’d rather that you ______ the operation right away.
#88337
A
perform
B
should perform
C
will perform
D
performed
She________the film. She knows nothing about it. 
#89871
A
can’t see
B
can’t have seen
C
must see
D
mustn’t have seen
Had we assisted him , he ________ us a hand ________ today . 
#87888
A
would have given ; in exchange
B
should give ; to exchange
C
could give ; in exchange
D
might have given ; to exchange for