閱讀下面短文，掌握其大意，然后從所給四個答案中選擇最佳答案。

　　It was ten o'clock 1, and the last bus 2 at the gate of a park. An old woman got out, and the conductor was going to ring the bell for 3 to start the bus again, when he saw a small boy 4 at the bus stop.

　　“What's the matter?”the bus conductor said to the boy.

　　“My mother gave me ten pence(便士) to go home by bus after I finished playing football in the park with my friends,”the small boy answered,“but I've 5 it, so now I have to walk all the way home.”

　　“That's all right,”said the conductor.“Come on. 6 you home.”

　　The small boy thanked him, 7 the bus and sat down near the door. The conductor rang the bell. Then the bus started.“How 8 are you going?”asked the conductor.

The boy told him the name of the place where he lived. It was about two miles away, and 9 would have cost (花費) three pence if the boy had the money to pay for it.

　　The conductor went to give some other people on the bus their tickets, and when he came back a few minutes 10, he saw that the small boy was crying again.

　　“And what's the matter 11 you now?”the conductor asked.“You are on your way home, aren't you?”

　　“Yes, I am,”answered the boy,“but what about my change? You haven't given that to me yet. You should give me 12.”

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