小学六年级英语：阅读理解天天练（16）

My grandfather is a teacher. He is the head teacher of a school for boys between the ages of thirteen and eighteen. I know that he is a kind man, because he gives me presents（礼物）, and let me sit on his knees（膝盖）, and tells me stories. But I believe(相信) the boys at his school are afraid of him. At school, when he walks into a room full of boys, they will be quiet at once（立刻）. When he looks at a boy with a certain look in his eyes, that boy’s face goes red, and looks down at his shoes. If a boy bri