7 July
Dear Mr. Smith,
On account of an attack of the flu with a severe headache, I shall be unable to attend classes today, for which I submit a certificate from the doctor. I shall be much obliged if I can get your permission.
Respectfully yours,
John Warner
Wang Li
尊敬的史密斯先生：
由于重感冒并伴随严重的头痛，我今天不能上课，特呈交医生证明。如获批准，不胜感激。
致
礼!
约翰·华纳
7月28日
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