题目内容
II.用本单元的词汇替换画线部分
1. Don’t get close to the fire. It's dangerous.
2. The frightening sound made us afraid.
3. Who knows how the Great Wall came into being?
4. After three hours,it appeared again.
5. Everyone present looked doubtful when they heard the story.
II. 1. go close to 2. frightened
3. came into existence
4. Three hours later 5. sceptical
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