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Bill is a good boy. He is seven years old, and he likes going to school. But he has a problem—he cannot get up early, so Bill's mother buys an alarm clock(闹钟) for Bill. She says to Bill, "You must get up when you hear the clock ring." "Yes, Mum," Bill answers. From then on( 从 那 以 来 ), when he hears the clock ring at six o'clock in the morning, he gets up quickly.

One day his mother forgets to wind up (上发条) the clock. And the next morning Bill doesn't get up on time( 按 时 ), so his mother goes to wake Bill up. Bill is in bed and his eyes are open.

"Why don't you get up?" his mother asks, "because I am waiting for the clock to

ring."