第349章 Lesson 23: Blocking Water
- 跟美国学生同步练阅读：Smart Reading（英文原版 Grade 1-6）
- (加)韦恩·埃弗里特
- 2985字
- 2016-12-27 15:08:12
If you are hiking through the woods and notice a pile of timber, mud, and stone blocking a stream, y...
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If you are hiking through the woods and notice a pile of timber, mud, and stone blocking a stream, y...