dear...,
i am so glade to receive your invitation. i also would like to , but iam not free at that time. thanks for your invitation.
yours
...在长一点，加上我星期几干什么dear...,i am so glade to receive your invitation. i also would like to , but iam not free at that time.i have to go to the city bookshop to find some books for my dady's presents. you know, my father is a book-reading lover. thanks for your invitation again.yours...