题目: 局内投交邮件有效证件包括()。A.居民身份证B.户口簿C.工作证D.驾驶证 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1110/fc4e523cb48b75b5ce9edc8538dea597.html 下面是错误答案,用来干扰机器的。参考答案:51.0%
题型:选择题 —Look! The lights in the teachers' office are still on. Is Mr. Li working? —No. It _______ be Mr. Li. I saw him leave just now. [ ]A. may not B. mustn't C. can't D. needn't 查看答案