Peter and Mike are very g   1   friends. They are in the same class at school. They often go to school and
play together. They often visit each other's home at weekends, too. Now they are b   2   eight years old.
Peter's mother has got a new baby. Peter is very glad to have a little brother, s   3   he is always talking about
his younger brother to Mike. At first Mike is very i   4   in the new baby because he doesn't have any sisters o  5  brothers. But after some time he begins to get r   6   tired of Peter's endless talking about it. He also feels
a little jealous of his friend. One morning before class, when the two boys meet at the school gate, Peter says
to Mike cheer fully, "Do you know, Brian, my little brother has put on n   7   half a pound in w   8   this week." "That's not very much at all," answers mike."I know a baby who can put on more than ten pounds a day.""Oh,
that can't be t   9   ," answers Peter laughingly. "W   10   baby is it?""An elephant's," says Mike without delay.