[解析]
(1)F.推理判断题.根据下面应答语There's still smog (雾霾) today(今天仍旧有雾霾.)可知,此处是在询问今天的天气情况,所以选F.
(2)D.推理判断题.根据上句There's still smog (雾霾) today.We'll have to go to school with face masks(口罩).(我们不得不带着口罩去上学.)和下句According to the news,PM2.5 pollution is the main problem with air pollution 可知,回答应该是真遗憾!故选D.
(3)B.推理判断题.联系下文描述,由于PM2.5主要是由机动车和工厂引起的.所以大排量的不应该上路,工厂应该受到严格监督.可知选B,你能提供一些建议吗?故选B.
(4)E.推理判断题.根据下句And we suggest making the blue skies return for good.及下文,为了让蓝天恢复原貌,我希望越来越多的人加入我们.可知选E,我同意你.故选E.
(5)A.推理判断题.根据We hope that more and more people will join us in making the blue skies return for good.可知,为了让蓝天恢复原貌,我希望越来越多的人加入我们.A.我也希望如此.故选A.