Dear Granddfather,
How are you,grandfather?I haven't seen you for a long time,I miss you so much!
I am so sorry that I can not visit you recently,because I have a lot of homework to do everyday.Wishing I can get good score after the school final exam,then I can visit you and grandmother with my good score,Okay!
Now,there is one thing that you need to do is to take care of grandmother and yourself,Okay?See you soon!
Love you!
Granddaughter/Linda