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 Saturday was May Day, which my class participated in the labor practice hold in our school vegetable base. At dawn, we cycled to base. On arrival, we were shown around by our teacher and then assigned different task. Under the teacher's guidance, we turned down the soil, weeded, planted vegetables like tomatoes and eggplants and water them. Looking at lines of young green vegetables, we both felt excited. The teacher cheerful said we'd enjoy vegetables grown by ourselves soon, which filled us with a sense of achievement. At noon, we went back to school. The meaningful activity offered to us a chance to learn about farming. Though tiring, we did feel the pleasure and value of labor.
