完成句子
【小题1】农村的空气污染比城市少。
【小题2】他和他弟弟合住一个卧室
【小题3】Andy迫不及待地打开了他的生日礼物。
【小题4】从扬州到南京乘火车要多长时间？
【小题5】如果有空，我会打电话给你的。There is less air pollution in the country than in the city.
网友回答
(答案→)There is less air pollution in the country than in the city.
解析：【小题1】句中有比较的概念，所以要用到形容词的比较级，污染是不可数名词，用less来修饰，用there be来表示空间某处客观的存在，即There is less air pollution in the country than in the city.
【小题2】合住可以用share sth with sb与某人分享什么来表达，即He shares a bedroom with his brother.
【小题3】迫不及待用英语can't wait to来表达，即Andy can't wait to open his birthday presents.
【小题4】做某事花费多长时间可以用it takes sb some time to do sth来表达，即How long does it take to go to Nanjing from Yangzhou by train?
【小题5】if的引导的条件状语从句要注意主句用将来时，从句用一般现在时表将来。即If I'm free, I'll call you.