why are there increasing mental problems in middle school students?why?it is because our educational system formiddle school fails or is it because ourstudents' load is too heavy?give me explainations.

Why are there who go? why there are 还是 why are there?why there are ...和 why are there...哪个是正确的? Why are there many books? Why are there so many questions? why are there so many worries everyday? why there are so many people like surfing the Internet? why there are so many people loving michael jackson Why there are a pig here中文是什么意思 there are no trees 和there are not trees.语法都对吗?why WHY are why there are so many dumb fucker in my lifedoes there any people can tell me? 能不能这样写.there are some reason why are you sleeping in the class but why do you go there?A;but why do you go there?B;many things ;green trees,clean air,and there are few people. There are many reasons why people like traveling.why可以换成什么?从句中关联词that 之前不可加介词 翻译：How many seasons are there a year? Which season do you like best why? WHY there are so many people like Michael Jackson 大概80词文章.. what are these over there 小题有一处错误,找出并改正why why are there more and more people leaving to immigrate to other coutries?