As we all know, paper-making is one of the greatest(invent)______in ancient Chin

游客2024-07-16  18

问题 As we all know, paper-making is one of the greatest(invent)______in ancient China.

选项

答案 inventions。

解析 空格前面出现了one of短语,意为“……之一”,因此推断空格处应该填入名词复数形式,故空格处填入invent的名词复数形式inventions。
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