Things are known _when they unite with the oxygen of the air.(burn)

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• Things are known _when they unite with the oxygen of the air.(burn)
• 英语Things are known ______ when they unite with the oxygen of the air.A.to burnB.burnC.burningD.being burning 为什么
• 英语Things are known ______ when they unite with the oxygen of the air.
• Things are known _when they unite with the oxygen of the air.(burn)
• I do not like milk as much as tea同义句I like tea _ _ milk横线上面填哪两个单词
• I like tea ____.I don't like milk______.A.very much,at all B.a little,a little C.a lot,a little D.lots of,at all