增加：在缺少词的地方加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词作斜线（\）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。
Today is Sunday I've been in Canada for two months
This is the first time that I've been away my family for such a long time With the help of Katia, a roommate of me, I've soon got used to live without my parents around Katia, like many other Russian girls are nice and lively We became friends shortly after we meet each other Although her English is a little hardly to understand, we enjoy chatting and we usually talk a lot about our own family We're both surprised that Chinese culture or Russian culture are so different Now, we are planning a small party for the next Sunday There, Katia will introduce me to some of her friends, one of who has been to China several times I just can't wait
