根据句子意思，用括号中所给单词的适当形式填空。（每小题1分,共5分）
I want       (make) a paper plane for my little brother.
The ____ (hero) in the story are great. I like them very much.
Betty practises ____ (dance) after school every day.
I go to the library_____(two) a month.
Cindy enjoys    (chat) with her classmates after class.