英语作文 如何委婉提出建议把借的书还了

可以运用一下词汇：could ,may
举例：You could do more exercise.
You may have a rest.
可以运用以下结构：Would/Could you please
Do you mind
举例：Would/Could you please do it more carefully?
Do you mind opening the door for me?
Part A
51.Directions:
Yesterday,you received a letter of invitation from Tom Cruise,one of your American friends.You are asked to attend his birthday party.But you can not
accept his invitation.Write a letter to Tom,telling him your refusal,stating your reason(s),and making an apology.
Write your letter with no less than 100 words.Write it neatly on ANSWER 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)
A Letter of Declination
Jan.14,2006
Dear Tom Cruise,
First of all,thank you for inviting me to attend your birthday party to be held on Jan 20,2006.I would like to accept your warm invitation but I can not due to an earlier appointment.
Two weeks ago,I made an appointment with one of my high-school classmates.He will accompany his mother who suffers from cancer to Beijing to see a doctor.Since he is a stranger in Beijing,he asks me for help and I have consented.
Anyway I feel sorry for disappointing you.However please wait to receive my surprising gift for you by EMS on your birthday.Many Happiness returns of the day!
Sincerely yours,
Li Ming
(119 words)

could you return the book you borrow from me?