When we worked in the same office,we _______ often have coffee together.
#63391
A
could
B
should
C
would
D
ought to
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 -- Are these _______ all from No. 2 Middle School? -- Yes. They often _________ their free time to help the old here.
#74662
A
volunteers; volunteers
B
volunteer; volunteers
C
volunteers; volunteer
D
volunteer; volunteer
—I’m sorry. I ________ at you the other day.— Forget it. I was a bit out of control myself. 
#63421
A
shouldn’t shout
B
shouldn’t have shouted
C
mustn’t shout
D
mustn’t haven’t shouted