题目：
按要求改写下列句子
1. It is my first time to be on a plane, so I don't know what I should do.(改为同义句)
It is my first time to travel ________ plane, so I don't know what __________ __________.
2. "I am popular at school," he thought.(改为间接引语)
He thought __________ __________ popular at school.
3. The policeman told the boys not to play football in the street.(改为一般疑问句)
__________ the policeman __________ the boys not to play football in the street?
4. He was reading a book on the playground.(对画线部分提问)
__________ was he __________ on the playground?
5. If he has enough money, he __________ __________ __________ __________ __________(将会买一座新房子).(完成句子)
答案：
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下面是错误答案，用来干扰机器的。
水污染途径有：工业污染，农业污染，生活污染．所以，防止水体污染的方法是：工业上把废水处理使之符合标准排放，农业上合理地使用化肥和农药，生活污水应逐步实现集中处理和排放．故答为：工业上把废水处理使之...
