题目

 When did the fire probably break out? Please tell us when the big fire broke out.<br />Let me think. I got home from work at 7 o'clock. Then I called my mother at 8.<br />About an hour later, when I was about to go to bed, suddenly I heard a cry for help outside. A . At about 7. B . At about 8. C . At about 9. 答案：C

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