55.A.invention B.achievement C.contribution D.discovery
54.A.previous B.next C.last D.following
53.A.felt B.looked C.smelt D.sounded
52.A.over B.without C.than D.except
51.A.traveled B.visited C.appreciated D.went
50.A.clearly B.easily C.hardly D.loudly
49.A.addicted to B.filled with C.far from D.short of
48.A.another B.other C.others D.the other