1.When Richard returned home, Anna watched TV program.
2.When we left New York, there was a rain.
3.I wrote a letter when the phone call.
4.We watched a TV program, when someone knocked on the door.
5.Joe became ill during our trip to Europe.
6.I was reading the newspaper when my friend arrived.
7.Jane played the violin when guests arrived.
8.We had breakfast when the postman rang.
9.Steven talked to Anna, when I saw them in Central Park.