Improve the air quality can make our city a better place to live in.该句中 to live in是做定于还是宾语补足语?要是做补足语为什么要加in 不是只有动词不定式做定于且动词为不及物动词时才要在动词后加介

qual qual The goverment has taken measures air quality.A to improve B improved C being improved 求大神看看这句话有没有语法错误?It is a good way to improve the quality of education is improving the quality of the teachers.第二个improve 为啥用ing形式呢?还有第二个quality既然后面跟的是teachers 为什么不用qual To improve the ＿they planted more trees and grass A.environmend B.water C.air D.land到底是什么？ Qual是什么意思 qual lot The best way to improve air quality 150作文1、随着经济的发展,空气严重遭到污染.2、提高空气质量的方法是什么3、我的观点 what is the most important factor that leads you to buy something:price,qual in the air on the air in the open air Let the Fresh Air make the air clean flew into the air air the quilt stick in the air the air【】【pollute】 Make The Air