Asking for an Extension of Leave
Aug。 11， 1994
Dear Teacher Huang，
I am still lying in bed with the flu and unable to get up。 I enclose a certificate from the doctor who is attending on ① me， as she fears it will be another two days before I shall be able to resume my study。 Please give an extension② of leave for as many days。
Your student，
Liu Xiaomei
Encl。: Doctor's Certificate of Advice