sep.28
dear mr. peter,
i would like to know if i could ask for a casual leave of absence for one day
on april 4th,this wednesday.(提出请假及时间) thanks. i will call you at 1:30 p.m. or you can call me at any time.(等候答复)(many thanks. im looking forward to your kind answer.)(希望获准)
earnestly yours，
li hua