Где здесь ошибка? Although he was found guilty, they went him of a warning

Question

Где здесь ошибка?
Although he was found guilty, they went him of a warning

Comments

Although he was found guilty, they let him off with a warning

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Answer 1

Although he was found guilty, they sent him of a warning

Answer 2

Although he was found guilty, they didn't issue him a warning.