1. 从方框中选择合适的单词并用其适当形式填空。

art, there, student, come, thing

1. （1） — Where is Jack's schoolbag?
   

   — Look! It's .
   

3. （2） Your parents can to our school library.

5. （3） Some and a teacher are in the classroom.

7. （4） Mr. Yang is an teacher.

9. （5） Those are in the bookcase.