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用所给词的适当形式填 用所给词的适当形式填空. 1.I think the light bulb is the most

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用所给词的适当形式填
用所给词的适当形式填空.
1.I think the light bulb is the most useful _____ (invent).
2.Thomas Edison was a great _____ (invent).
3.The cup is used for _____  (warm) the cold wine.
4.The length of the rope is _____ (adjust).
l.  invention   2. inventor   3. warming   4. adjustable