增加：在缺词处加一个漏字符号（∧），并在此符号下面写出该加的词。
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。
Today our class paid a visit a farm. Early in the morning, we met at the school gate and went there together by bus. The farm workers give us a warm welcome at the farm entrance, what moved us deeply. Then we were showing around the wonderful agricultural garden.
How happily we were to see the crops and vegetables growing well. At noon we sat and had a picnic lunch in the sunshine, sharing snacks, fruit and drinks. After a ten-minute break, we had a great fun telling jokes and story, as well as singing and dancing. Two of them even played a game of chess.
Time went by quickly. After we knew it, it was already dark because we had to leave.
