用所给词的适当形式填空。

1. There are some boys ________ (skate) in the gym.

2. Before the teacher came in,the classroom is a little ________ (noise) .

3. July 4th is ________ (depend) Day in the USA.

4. I will work ________ (hard) this term.

5. Everyone is ________ (friend) to me in this school.

6. There is a big star and four smaller stars in our ________ (nation) flag.