[問題]請問 because這兩句話哪裡有誤?

[neusiedle (guest)]

這兩句有誤,請大家幫我找出錯誤:

(1) He didn't work hard. Because of this reason, he failed the exam.



(2) Because of the traffic jam, he was late for thirty minutes.


謝謝大家!

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