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英语
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What are the trees used___?
They can be used ___ make paper and pencils.
A for,to B to,as C on ,to
人气:297 ℃ 时间:2020-04-04 15:16:21
解答
A
be used for 被用来...
be used to do 被用来做...
这些树被用来做什么?
它们被用来制作纸张和铅笔.
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