Tom likes fish very much.He often buys some fish in the shop and takes it home.But when his wife sees the fish,she says to herself,"Good!I can ask my friends to have lunch,and we can eat the fish.They like fish very much."So when Tom comes home in the evening,the fish is not there and his wife always says"Oh,your cat eats it."And she gives Tom some bread for his supper.Tom is very angry.He takes the cat and his wife to the shop near his house and weighs the cat.Then he turns to his wife and says"My fish weighs one kilo.This cat weighs one,too.My fish is here,you see,then where is my cat?"