1. When the alarm clock rang, I was sleeping.

  2 The alarm clock rang.

  1 I was sleeping.

2. When I saw Dr. Jarvis vesterday evening, he was waving at me.

  1 I saw Dr. Jarvis yesterday evening.

  2 He was waving at me.

3. When I saw Dr. Jarvis yesterday evening, he waved at me.

  2 I saw Dr. Jarvis yesterday evening. 

  1 He waved at me.

4. I closed the windows when it was raining.

  2 I closed the windows. 

  1 It was raining.

5. I was closing the windows when it began to rain.

  1 I was closing the windows.

  2 It began to rain.

6. The server brought the check when we were eating our desserts.

  2 The server brought the check.

  1 We were eating our desserts.

7. When the doorbell rang, Sam went to the door. "Who is it?" he asked.

  1 The doorbell rang.

  2 Sam went to the door.

8. Sam was going to the door when the doorbell rang. "I'm coming, Bob," he said. "Is walking up the sidewalk."

  2 The doorbell rang.

  1 Sam was already going to the door.

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