[解析]
Nowadays fewer students take exercise due to various reason and some students fall ill every now and then because of they are not healthy or strong enough. However,we should take exercise regularly to improve our health.
First of all, taking PE classes seriously.In PE classes we can build up our bodies with the careful guidance of PE teachers.Secondly,it is of great important to make it a routine to exercise after class or during breaks.In addition,it was also a good idea to join a sports club that you are interested ∧.
As the old saying go, "The first wealth is health." Let's do more exercise to live a better and healthy life.
详解:
1.reason改为reasons.考查名词复数.reason是可数名词,其前有various修饰时要用复数形式.故reason改为reasons.
2.去掉of.考查词语用法.because意为"因为",是连词,连接两个句子构成原因状语从句;because of意为"因为",是介词,接名词或代词.此处应是前者.故去掉of.
3.However改为Therefore/Thus.考查副词.前后两个分句是因果关系,用副词Therefore/Thus.故However改为Therefore/Thus.
4.taking改为take.考查动词.祈使句中用动词原形.故 taking改为take.taking改为take.
5.with改为under.考查介词.under the guidance of意为"在 …的指导下",是固定搭配.故with改为under.
6.important改为importance.考查固定句型.be+of+抽象名词,相当于be+该抽象名词的形容词形成,主要用来表示主语的性质.这一结构中的抽象名词前可用great,little,no,some,any,not much等修饰,以表示不同的程度,抽象名词常用importance,value,use等.故important改为importance.
7.was改为is.考查动词时态.因本文讲述的是一般事实,要用一般现在时态.故was改为is.
8.加in.考查固定搭配.be interested in意为"对…感兴趣",是固定搭配.故加in.
9.go改为goes.考查主谓一致.主语the old saying是单数形式,谓语动词也用单数形式goes.故go改为goes.
10.healthy改为healthier.考查形容词比较级.and是并列连词,它前后连接两个相同的语法成分,better和healthier是并列定语,都用形容词比较级.故healthy改为healthier.