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 Sunday, some of my classmate and I took a bicycle trip along the “East Lake Green Road”. It specially built for people to relax ourselves. The scenery along the road was breathtaking, with big trees, fragrant flowers, tall hills and clear lakes in both sides. We stopped by a lake for the rest, where a great many people were playing happily. But something unpleasant caught up our eyes. There was rubbish here or there, and there were many plastic bags and bottles floated on the surface of the lakes. Such a beautiful place was so serious polluted. What a shame! Therefore* we couldn't help collecting the rubbish after we left.

    Strange things happened in Tangshan. ____ three days, water in the wells kept ____ (rise) and falling. ____ (smell) gas came out from the cracks of wells. Animals became ____ (nerve). There were other signs of an earthquake but the people thought little of these events. At 3: 42 a. m., everything began to shake. The world seemed ____ (be) at an end. One-third of the nation felt the ____ (great) earthquake. In fifteen seconds the city lay ruins. Two-thirds of the people died or ____ (injure). Thousands of families were killed and many children were left ____ parents. Then later that afternoon, ____ big quake shook Tangshan. People began to wonder how long the disaster would last. ____ all hope was not lost. Soldiers came to help the rescue work. Slowly, the city began to breathe again.