根据提示,用英语写一篇80个单词左右的作文。

上午10点，你正在一家商店买东西，这时候近来一对美国夫妇。他们要买衬衫。由于售货员不懂英语，他们显得很着急。你帮了他们的忙，他们对你很感激。你对自己能与外国人交谈感到很高兴。

At 10:00 this morning , I was doing some shopping in a market when an American couple came in .They'd like to buy a shirt ,but the shop assistant couldn't understand them so they all looked anxious . at this moment I went towards them and helped them solved this problem .They all appreciated what I did for them and said thanks to me .I feel very happy to chat with foreigners and determined to work hard at English .