单项选择题
A．the wall B．the door C．a piece of paper D．his son's pocket
A．he thought the child's father was dead B．the child didn't ask him to sit down C．the child gave him a cup of tea D．he couldn't find that piece of paper
A．he would be away from home for four days B．he would be back in seven days C．he would be back in a month D．he liked a cup of tea