七、短文填空。
阅读下面的短文,在空白处填入一个适当的单词或括号内单词的正确形式。
Jack is 1. middle school stu- dent. There are too many rules in his school. First, they must wear school 2. (uni- form) on school days. They have to get to school on time. They can't arrive late 3. school. Second, they can't run in the class- room or in the hallways. 4. (three), they can't eat in the classroom, and they have to eat in the dining hall 5. outside. Fourth, they mustn't 6. (talk) loudly in the library. They must keep quiet. Fifth, they must 7. (clean) the classroom every day. Keep it clean. Don't make it 8. (tidy). Sixth, they can't bring the music play- ers to school, and they can't listen to music in class either. For boys, they must keep their 9. (hair) short. They can't have long hair. Jack says the rules are too strict. But they have to follow 10. (they) because they are good for them.

1. a 2. uniforms 3. for 4. Third 5. or 6. talk 7. clean 8. untidy 9. hair 10. them