批改短文，是否有错误的地方

Dear Mr.Smith,
Due to the bad cold I got yesterday,I didn’t feel well and went to hospital.After the examination, the doctor suggested that I should have a rest for at least two days. Therefore, I’d like to ask for leave of two days , starting from March 18 to March 19 and the doctor’s certificate is enclosed.
I would be very grateful if you can grant my leave of absence.As to the work to be missed during my absence, I promise to make them up when I come back.

尊敬的史密斯先生：
由于我昨天感冒了，身体不太舒服，我去了医院。经过检查，医生建议我至少休息两天。因此，我想请假两天，从3月18日到3月19日，并附上医生证明。
如果您能批准我的请假，我将不胜感激。至于我请假期间错过的工作，我保证回来后会补上。