Re-write the following sentences shown below, giving similar meanings.
1. I read the story two times. I finally understood the writer's idea.
After..................
2. He became a teacher. He worked as a salesman.
Before..............
3. While she was cleaning the room, tom came in.
When................
When it began to rain, I was walking down the street.
While................
5. Before he became a captain, he had won several competitions.
After..................
6. While I was reading a book, the telephone rang.
When.............