在上周四区参加学校统一组织的补考,由于时间上的冲突,所以没能及时赶回来上课,希望老师原谅,特此请假>

Question

在上周四区参加学校统一组织的补考,由于时间上的冲突,所以没能及时赶回来上课,希望老师原谅,特此请假
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Answer 1

I had to take a school mandated make-up exam last Thursday. The exam time overlapped with your class, so I was not able to attend the class last week.
Thank you for your understanding and to approve my absence request.