参考答案:
1. ---What were you doing last night? ---I was helping my mother in the kitchen.
2. Although the storm broke many things apart, it brought families and neighbors doser together.
3. People often remember what they were doing when they heard the news of important events in history.
4. In America many people remember what they were doing on April 4, 1968.
5. We were eating dinner in the kitchen when we heard the news on the radio.
6. I didn't believe him at first, but then I looked out the window and realized that it was true.
开心一笑:
I'll go at night!
      There were three men talking about space travel. One man said, “I'm so smart that I can fly to the Mars in one week.” The second man said, “I'm smarter. I can fly to the Mars in one day.” The third man said, “I'm smarter than both of you. I can fly to the sun.” The other man said, “You can't fly to the sun. it's too hot.” The third man responded, “I'm not so dumb. I'll go at night!”