王老师:19139051760(拨打)复制微信 题目 更新时间:2025/11/28 Professor Sun, along with his assistants, __________ on the project day and night to meet the deadline.A、work B、working C、is workingD、are working 答案 登录 注册 C 出自:江开 >> 大学英语B2252 继续教育学院