增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1).每处错误及其修改均仅限一词。

2).只允许修改10处，多者（从第11处起）不计分。

Dear David,

    I'm happy that you're interesting in our flea market and here is a brief of introduction of it.

    To raise students' aware of making the most of used things, the Students' Union held a flea market on campus recent. The event attracted a crowd from the whole school, who come here to sell, purchase or swap used goods with their schoolmate. On the market, you could find vary things, from second-hand textbooks, magazines to CDs, bikes or clothes at a lower price.

    In my opinion, the flea market not only provides a platform save resources but also helps students learn some practical skills, where may be useful for their future job hunting.

                                                                                                                                   Yours,

                                                                                                                                 Li Hua