问题 更新时间2023/4/3 12:59:00 When I entered the room, I saw him _____ in a front seat staring at a picture in a strange way. A.to sit B.is sitting C.sat D.sitting 答案 登录 注册 参考答案:D 出自:联大 >> 河南师范大学-工商企业管理-大学英语I