Answer:
1. By the time they got to the theater, the play had already started.
2. When he got to the finish line, he ran for three hours.
3. By the time they left town, the mechanic had repaired the car.
4. Joe brushed his teeth by the time he went out.
5. After they opened the door, they saw that the room was a complete mess.
6. We all worked in the garden for a long time when we found the hole.
7. After the storm stopped, we could finally leave the house.
8. The football fans had made trouble for some time, then the police arrived.
9. When the teacher finally came in, the boys had fought for 10 minutes.
10. When Tommy finally came, the girls sang for a few hours.
Step-by-step explanation:
If it sounds correct it probably is.