问题 更新时间2023/4/3 12:59:00 They __ ______ good friends and often visited each other.A.are used to beingB.are used to beC.used to beingD.used to be 答案 登录 注册 参考答案:D 出自:联大 >> 河南理工大学-采矿工程-专升本英语1