1. 用所给动词的正确形式填空

1. （1） He always (listen) to classical music.

3. （2） We must ( go) to school on time.

5. （3） —Whose bike is this?
   

   —It might (belong) to Mary.
   

7. （4） I tried (run), but I couldn't (catch) the bus.

9. （5） Our neighborhood used (be) very quiet.