55.A.if B.when C.but D.and
54.A.voices B.poems C.cars D.music
53.A.ever B.often C.seldom D.never
52.A.understand B.remember C.study D.finish
50.A.shouldn't B.needn't C.couldn't D.mustn't
5l.A.wounded B.lost C.pleased D.Confused
49.A.surprise B.sadness C.happiness D.disappointment
48.A get on well with B.keep up with C.make fun of D.get rid of