A.till
B.by
C.at
D.on
A.like
B.possible
C.probable
D.likely
A.can
B.may
C.must
D.needn’t
A.must
B.may not
C.won't
D.should
A.change
B.exchange
C.trade
D.know
A.No, I don't know.
B.Sure. What is it?
C.Don't mention it.
D.That's it.
A.want
B.love
C.like
D.short
A.below
B.beyond
C.over
D.without
A.singing
B.sing
C.singed
D.sing