sad

Today was so sad day because my grandfather passed over day. My sister called me afternoon for grandfather died in yesterday. While few minitte, I couldn't believe the sound because he was getting 80's over age, but he was so healthy...
When I was child, my grandfather took care about me a lot. Usually my mother told me. He was better than grandmoter for me. If I will miss him, how can I do? I do to what.
My father is getting more sad because father was not friendly with his father, but my father always thought about his father. So my father will miss a lot of his father's memories.