My beloved grandpa and grandma

I hardly remember my grandmother. She used to holding me on her knees and sing old me songs. I was only four when she passesed away. She is just a distant memory for me now. However, I remember my grandfather very much. He was tall, with broad shoulder and a beard that turned from black toward  to gray over the years. He had a deep voice, which set himself apart from others in our small town, he was strong and powerful. In a fact, he even scared my classmates away during when they came over to play or do homework with me. However, he was the gentlest man I have never known.

假定英语课上老师要求同桌中间交换