Unit 3 Let's live a low carbon life 知识点题库

Why did you print on the both sides of the paper?
A . 你能印正反两面的纸吗? B . 你为什么正反两面打印呢?
选出不同类的单词(   )
A . head B . little C . nose D . eye
Don't leave the water running when you're not using it.
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