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限一词；
2．只允许修改10处，多者（从第11处起）不计分。
Last Sunday, I joined the voluntary group to help keep the traffic in good order at a big crossing near our school. At 8:00 a.m., we arrived there, wore red vests with the word VOLUNTEER on the back. We helped with the police remind the passers-by to obey traffic rule. To our delighted, they all waited for the green light patient except one motor-biker. We also give out some hand-made brochures about traffic regulations, for that many people praised us. About 4 hours later, they said good-bye to the police and left. Tired as we were, we all felt an honor to do our parts.
