Translation of "人間はいつ道具を使い始めたのか。" in English

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Examples of using "人間はいつ道具を使い始めたのか。" in a sentence and their english translations:

人間はいつ道具を使い始めたのか。

- When did man start to use tools?
- When did man start using tools?
- When did people start using tools?
- When did people start to use tools?