----Shall I go and buy two more bottles of beer? ----No, I’ve already bought them yesterday. That           be enough for us two.
#62766
A
can
B
may
C
should
D
might
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Not having work out the problem,          leave the office.
#63683
A
so he was not allowed to
B
and he didn’t want to
C
the teacher couldn’t make him
D
he couldn’t free himself to