Haven't seen you for a long time?These days I stayed at home busyly preparing for my English exam ,so it may be not easy for me to find a time to visit you.Hope that you will be enjoying your life .I have something to trouble you,as you know ,English grammar is always hard for me to master.So I want you to help me to buy a grammar book,any time as you are convinent these two weeks.Wish you to visit my family.
faithfully yours