标签：话题作文 话题 英语四级作文
字数：1500字
提要：How to Sort Letters-如何进行信件分类 英语作文网为您收集 英语作文网 How to Sort Letters First of all, letters and packets are collected ii1 bags from pillar boxes, post offices and firms, in post office vans. They are then taken to the sorting office, where the bags are emptied and the letters separated from the packets. Following this step, the letters are put through machines so that the stamps c..