A.of us；for
B.at us；at
C.to us；in
D.for us；to

A.used to swim
B.used to swimming
C.use to swim
D.use to swimming

A.spoken；written
B.speaking；written
C.speaking；writing
D.speak；write

A.don’t
B.didn’t
C.not
D.do

A.and；than
B.or；than
C.and；and
D.or；to

A.He’s taken
B.He’ll be taken
C.He’ll take
D.He’s been taken

A.decorating
B.to decorate
C.decorate
D.decorated

A.saw
B.watched
C.noticed
D.observed

A.be fit for
B.make good use of
C.play a part of
D.take the place of

A.since
B.for
C.during
D.in

A.a sick
B.an ill
C.sick
D.ill