DearMiss/Ms/Mrs/Mr________,(老师的姓,女的有三种称呼,男的有一种)IamterriblysorrytoinformyouthatIhaveabadcaseofcold(flu).MydoctorrecommandthatIstayinbedfor2days.Therefore,Ihopeyouwouldgivemepermissiontohavea2dayoff.HopefullyIwillcomebackin2dayswithmyoldself.Sincerely________(你的名字)