47.A.attention B.attractive C.careless D.inattentiveness
46.A.with B.before C.in D.on
45.A.increase B.decline C.improvement D.rose
44.A.allowed B.invented C.introduced D.bought
43.A.may B.must C.can D.should
42.A.delivering B.carrying C.taking D.sending
41.A.well B.good C.better D.best
40.A.millions B.milions of C.million D.million of
39.A.been exploded B.exploded C.been exploding D.exploding
38.A.under B.on C.from D.to