Exercise
请你阅读下面一小段短文后，用大约40个词给出这故事一个完美的结局（由你设想）。
It took Charlie several months to save up seven dollars．He wanted to buy a model plane and went to the shop with the money．
On the way Charlie saw a little boy crying on a corner of the street．“Why are you crying？” Charlie asked．
“Three big boys took away my four dollars just now，”the boy said，“I was on my way to buy some Exercise -books，but now I can't．”
要求：
1．结局由你设想。
2．意思连贯，处理得当。
参考范文
Charlie thought of the seven dollars in his pocket as well as the boy．
Charlie wanted to walk away，but he did not．At last he gave four dollars to the boy and went home．
