用所给词的适当形式填空。
1. He __________(work) in that hospital four years ago.
2. Why __________ your brother __________(cry) last night?
3. I __________(see) him yesterday.
4. He __________(come) to school at 6 o’clock this morning.
5. The boy __________(have) a bad cold yesterday.
6. When __________ you __________(buy) that house?
7. He __________(tell) a story to his daughter yesterday.
8. __________ you __________(try) to call me last night?
9. What __________you __________(buy) in the shop?
10. I __________(buy) a coat just now.
11. She __________(paint) the wall last month.
12. My mother __________(be) a worker 20 years ago.
