【单选题】Mr. Stone sat tight-lipped, until toward the end when he slowly turned to the right and then to the left, looking at each of us in turn as if he wanted to _________ the picture on his mind.
【简答题】Mr. Stone sat ______________(紧闭嘴巴的), until toward the end when he slowly turned to the right and then to the left, looking at each of us in turn as if he wanted to ______________(深深记住)the picture on h...