根据汉语完成英语句子1.在大城市生活的费用很高.2.那个城市的人口已经达到了700万.3.保护环境是我们的职责.4.太多

1。The cost of living in the city is very high。2。The population of that city has got to 7million。3。It is our duty to protcet our envioronment。4。Too much traffic are to cause pollution。5。We should take some measures to prevent these things from happening。