51.A.gradual B.complete C.endless D.timeless
50.A.praise B.support C.teach D.follow
49.A.discover B.learn C.improve D.show
48.A.for B.out C.off D.back
47.A.dream B.success C.progress D.future
46.A.original B.perfect C.same D.correct
45.A.gave B.went C.put D.set
44.A.oneself B.somebody C.myself D.nobody
43.A.art B.truth C.fact D.lesson
42.A.At the end B.At the beginning C.In return D.On one hand