用所给系动词、助动词或情态动词填空。 am is are do does did will shall can was were must 1. — What ___________ you? — I ___________ a typist. 2. What ___________ your job? 3. ___________ they come from Shanghai? 4. What ___________ I do for you? 5. Bill is ill. So he ___________ stay in bed. 6. He ___________ at home last night. 7. Where ___________ you yesterday? 8. She often ___________ her homework in the evening. 9. ___________ I open the door? 10. She ___________ be ten next month. 11. ___________ you enjoy your holiday?