You have made an appointment with your teacher, but failed to keep it. Write a letter to your teacher to

　　1)apologize for your failure to keep the appointment,

　　2)explain your reason to your teacher, and

　　3)express your wish to make another appointment.

　　You should write about 100 words on ANSER SHEET 2. Do not sign your own name at the end of the letter. Use “Li Ming” instead. You do not need to write the address. (10 points)