题目内容
用括号中所给单词的适当形式填空。
Edison was a great American ________ . He ________ many thing. Most of the ________ were very useful. (invent)
答案：inventor,invented,inventions
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题目内容
用括号中所给单词的适当形式填空。
Edison was a great American ________ . He ________ many thing. Most of the ________ were very useful. (invent)