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參考詞匯: Changjiang Community n.長(zhǎng)江社區(qū); exchange v. 交換; used 單元主題寫作五 One possible version: It was fine last Sunday. I went to the Yard Sale in Changjiang Community. More than 200 people took part in the activity. Some people sold used things such as bikes, toys and clothes. Others sold cakes, cards and bookmarks made by themselves. Used books could be exchanged in the yard, too. I enjoyed myself there. In my opinion, it was a very good activity. We can not only make full use of used things, but also protect ou