51.A.a different B.many big C.even bigger D.the same
50.A.landed B.saw C.cast D.threw
49.A.wrong B.right C.satisfactory D.pleased
48.A.fled B.disappeared C.floated D.swam
47.A.the wide container B.the broad sea
C.the black water D.the small river
46.A.passed B.changed C.fixed D.refused
45.A.tell B.say C.speak D.talk
44.A.Even though B.Now that C.Ever since D.In case
43.A.bring it home B.put it aside C.put it back D.pick it up
42.A.and B.but C.however D.yet