Dear xxxxx,
I am very sorry I did not come to our meeting on Monday.I was not feeling to well on Sunday night,but I thought it was just my allergies,so I did not pay much attention to it.However,on Monday morning,I was so sick and dizzy that I could barely get off my bed.My mom took me to hospital that day,but I was so sick I forgot to give you a call to let you know about my situation.Please forgive me for not showing up.
Your best friend,
Li Ling谢了