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　　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(活动房屋式的拖车), Bill．It’s cheaper than a hotel．I can borrow my father’s trailer．”

　　Bill 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 clock．

　　“That’s all right, Bill, ” Fred said．“I’ll put these pieces of bread on the roof 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．

1．Bill and Fred were both university s________．

2．The two young men decided to go in a 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 early, 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 at first．

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________．