One learns a language by making mistakes...

One learns a language by making mistakes and________ them.

A．correct

B．correcting

C．corrects

D．to correct

B 【解析】考察句型，根据句子结构可知，and连接的是making和correcting连个并列结构，因此correct应当和making保持一致。句意为，人们通常通过犯错误和纠正错误来学习一门语言。

考点分析：

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