dear sir or madam:
dear mr li/miss li/mrs li,
i beg to apply for two days’ leave/a week’s leave/7 days’ leave of absence (请假) from the 7th to 8th of this week. because i was ill, i want to return/go home to see the doctor.
to support my application, i herewith/enclose the sick leavecertificate.
i should be very much obliged if you will grant me my application. as regards the lesson to be missed during my absence, i will do my best to make them up as soon as i get back from leave.
yours respectfully,
li min
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