问题 更新时间2023/4/3 12:59:00 His father was ______ in thought and did not hear the door open.(本题3.5分) A、 lose B、 lost C、 cost D、 last 答案 登录 注册 B、 lost 出自:青书学堂 >> 延安大学大学英语3(专升本)