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 Sir,

    I'm writing to offer some advices on our winter travel. In my opinion, a one-week trip to a countryside can't be good. The fresh air and various activities will guarantee us a healthy life here.

    We may go by bike to enjoy the landscape. During the trip, we can arrange some activities, from what we will benefit a lot, such as playing snowballs, building a snowman, going skating and climb a mountain. We can even invite the local students join us, not only to improve their English but also to deepen their understanding of the countryside. I am confident to establish friendship and harvest happy from this trip.

    I would appreciate it that if you could take my plan into consideration.