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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.