用所给动词的正确形式填空：
1. Li Ping often __________ (read) English in the morning.
2. __________ he __________ (clean) the windows once a week.
3. The workers __________ (have) sports on the playground now.
4. How long __________ you __________ (stay) there the day before yesterday.
5. Who __________ (listen) to the music?
6. When I __________ (be) a middle school student, I often __________ (sing).
7. His parents __________(go) to the Great Wall tomorrow morning.
8. __________ they __________ (study) Japanese next term?
9. What time __________ you __________ (do) your homework everyday.
10. Look! The students __________ (clean) the classroom.
11. What _________ your after _________ (do) yesterday?