1. _________ should not be allowed to go out at night.

A. Twelve-years-old　　　　　　　 B. Twelve-year-olds

C. Twelve year old　　　　　　　　 D. Twelve years olds

6. We are very ______( sleep ) in spring.

5. He goes to help the old man _______( one ) a week.

4. We would feel more _______( comfort ) and that is good for studying.

3. He thinks young people today show that they are cool with their______( personal ).

2. He thinks this is his ______( success) lifestyle.

1. These _______( teenager )like to go out at night.

5. Children like watching _______. Some adults also like watching them, too.

　 B)用所给单词的适当形式填空。

4. I want be a ______ in the Olympic Games 2008 of Beijing.

3. He often ______ with his friends on the Internet.