Havingawalkaftersupperiscertainlygoodfortheoldpeople,b... 国语站 题库 1.43W 大中小设置文本大小 问题详情: Having a walk after supper is certainly good for the old people, but it remains ______ whether they will enjoy it. A. to see B. to be seen C. seeing D. seen 【回答】B知识点:非谓语动词题型:选择题 TAG标签:#