问题 更新时间2023/4/3 12:59:00 [单选题,3.3分] By the time Jack comes back from his hometown, we _______ all the preparations.A.finishB.have finishedC.had finishedD.shall have finished 答案 登录 注册 参考答案:D 出自:联大 >> 安阳师范学院—大学英语