41.A 由Fred likes fish very much.可知
42.C 由 His son sees the fish and says tohimself , “Very goodI can ask my friends to have for lunch.”可知
43. B(cat) 由He takes the cat and his son to the shop weighs(称) the cat. 可知
44.D 由 my fish weighs one kilo,可知
45.D 由says to himself , “Very goodI can ask my friends to have for lunch.” 可推断