Bill and Fred studied at a university and they were friends. They didn't have much money, so when it was time for their holidays, Fred said, "Let's take our holidays in a trailer[1], Bill. It's cheaper than a hotel. I can borrow my father's trailer."

　　Fred was very happy. So they got into the trailer and began their holidays. They wanted to get up early the next day to go fishing, but they didn't have an alarm[1] clock.

　　"That's all right, Bill," Fred said. "I'll put these pieces of bread on the roof[3] of the trailer tonight and they'll wake us up in the morning." Bill was very surprised, but he didn't say anything.

　　Fred was right. As soon as it began to get light, small birds came down to eat the bread, and their noise on the roof of the trailer woke Bill and Fred up very quickly.

　　Notes:[1]trailer/`treIl/ n. 活动房屋式的拖车 [2]alarm/`la:m/ n. 警报 alarm clock 闹钟 [3]roof/ru：f/ n. 顶；房顶

　　1.Bill and Fred were both university s　　　.

　　2.The two young men decided to go t       during their summer holidays.

　　3.The two young men tried to s　　　some money,so they borrowed a trailer.

　　4.The two young men wanted to get up, but they were a　　　to wake up too late the next morning.

　　5.Fred had a good i　　　.

　　6.Bill didn't know w　　　his friend put some bread on the top of the trailer.

　　7.The next morning, the birds found the bread and flew to e　　it.

　　8.In fact, the b　　　woke the two young men up.

　　9.The birds began to look for f　　　as soon as it got light.

　　10.Fred was very c　　　.