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：在错的词下画一横线, 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。
One summer, a biker friend invited me join him in a bike festival. He said we could camped at the festival and that he had plenty of rooms in his tent for me. That Saturday morning, we get on our bikes to the festival at 9:30 am. On the way, my bike broke down. It took him about one hour to fix it, and I felt proud with myself. When we arrived at the campsite at 11:30 am, it began raining hardly. I was really embarrassing when I found that my friend had been forgotten his tent! Fortunately, one of the other bikers had brought the extra tent, so we borrowed that!
