增加：在缺词处加一个漏字符号（Λ），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l1处起）不计分。
I'm writing to complain about the quality of the computer which I purchase from your store on January 1, 2019. It unexpected went wrong a few days late. The monitor turned out to be a black screen. I read through accompanying instructions, and tried my best restart the computer several time, but it still failed to work. However, I'm sure there is something wrong for the computer. I am hoping if you can direct me to a store where I may return it for a new replacement within the next three days. Since your store has been gained a good reputation for customer satisfaction, I'm confidence that you will process my complaint at your earliest convenience.
