doing eye exercises后跟单数还是复数?为什么？

doing eye exercises后跟单数还是复数?为什么？ Doing eye exercises is (help)to your eyes. doing eye exercises and morning exercises (be) good for health. 说明理由 ______ is good ______ your health.A.Do eye exercise,for B.Doing exercise,for C.Do eye exercises,to D.Doing eye exercises,to () is good () your health. A: Doing exerciser , for. B: Do eye exerceses, to C : Doing eye exercises, to 英语 哪句对哪句错==Doing eye exercises works well in protecting the eyesight===Doing eye exercises work well in protecting the eyesight Doing eye exercises is good for your eyes.这里的exercises做为可数名词,为什么后面用is? Keep your eyes _____ when you are doing eye exercises 为什么? Doing eye exercises ________you heathlyA,keeps B.to keep C.kept D.keeping It is important for students ______ eye exercises every day.A.are doing B.doing C.do D.to do 很着急,明天比赛!Doing eye exercises is good for us students,答案上说us是students的同位语,Doing eye exercises is good for our students对不对? we should keep our eyes__while doing eye exercises.Aclose Bclosed keep sb +adj 我选A答案是B We should keep our eyes ________while doing eye exercises．A. close B. closed C. open D. opened Look!Class One are doing eye exercises.为什么用 are doing 不用is doing?详细一点的说那么everone 用复数还是单数？ doing exercises是什么意思 用英文做同义句填空.做眼保键操对你的眼睛有好处.Doing eye exercises _____ (be) good for youreyes.___ ___ ___ ___ ___ ___to do eye exercises 来找找这篇英语文章的错误紧急.Doing eye exercises is a good way to your eyes.So some school makes students do eye exercises after the class evry afternoon.But some people say it is not good to do eye exercises after the class.They think ( )do you do eye exercises a day?