1)You make pancakes. I have already made some. a) mustn't
b) have to
c) don't have to
2) students borrow up to four books at a time
a) are allowed to
b) must
c) can't
3) I have just bought a lottery ticket. I because rich soon
a) must
b)could
c)am allowed to.
4) mr. black be away weekend, but we're not sure.
a) might
b)has to
c) must
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