看看你的应变能力，用所给单词的适当形式填空。

1.I'll strive _____ (improve) my spelling.

2.he didn't come to school because of his _____ (ill)

3.There are some _____ (piece) of paper on the desk.

4.Look,Lily,the word "green" _____(spell) "gren" by you.

5.He is my English _____(teach).

6.I have some good _____(friend).

7.We usually ____  (go ) to work at 7:00.

8.Class was over.All the students _____(get) out of their classroom.