Answer:
1.They ate everything by the time I arrived at the party.
2.By the time I got into town, the shops closed.
3.The child sleeps before 9 p.m last night.
4. Yesterday John went to the store before he got home.
5. She left here before 1975.
6. After they were gone I sat down.
7. They went home after they finished their work.
8. Before she watched TV, she hand done all her homework.
9. Before I left for work yesterday, I turned off the lights.
10. After they had acquaintance for 5 years, they got married.
Explanation:
