问题 更新时间2023/4/3 12:59:00 16.They _________ good friends and often visited each other. A. are used to being B. are used to be C. used to being D. used to be 答案 登录 注册 D 出自:文才 >> 西北师范大学毛泽东思想和中国特色社会主义理论