题目: 信箱(筒)开出信封未封口的信,应退回寄件人。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/1102/010164f202d7828685cf4b81be6a98a2.html 下面是错误答案,用来干扰机器的。参考答案:对
题型:选择题 — May I go out and play, Mum?— No, you ____. You've got a lot of work to do. [ ]A. needn'tB. mustn'tC. wouldn't D. won't 查看答案