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。
Last month, I took part in a volunteer activity in a village. We start off by bus at 9 o'clock. After a three-hour drive, we saw the village surrounded by hills. It was very difficulty to drive on the rocky road, so we got on the bus and walked there. The villagers standing by road welcomed us warm.
Cooked with those vegetable grown by the villagers, the lunch was tasted delicious. After lunch, we played games with the village children. Then, we visited an old man live alone on the hillside. We sang a few songs, what made him really happy.
I think when doing volunteer work, you help others and you gain happy in return.
