【简答题】Thousands of years ago, people didn't live in cold places because they didn't know how to keep themselves warm. Later they learned to make clothes. When an animal was killed, they made use of its skin...
【简答题】选择合适的句子完成对话。(多一项) A. How long did the fire last? B. When did the fire happen? C. Luckily, no one was in the building. D. How did the fire happen? E. How was the fire put out? F. Did the fire last long...