Our advice of dispatch was faxed to you three days ago and you_______it by now.
A、will receive
B、received
C、must have received
D、have been received
【正确答案】：C
【名师解析】:选项C "must have received" 是正确答案。这个短语表示对过去某个动作的强烈推测或确定性，通常用于表达说话者认为对方在过去某个时间点之前已经完成了某个动作。在这个句子中，说话者提到了三天前已经发送了发货通知，并且认为对方到现在已经收到了。这种用法在英语中常用于表达对过去事件的肯定推测。其他选项要么时态不正确，要么语法结构不符合句子的语境。
