Doing sports is good for health.为什么用is不用are?

Doing more o_____ sports is good for you. Doing sports every day is a good h------ doing sports is good _______your health.doing sports is good _______your health.A.sees B.reads C.watches Doing sports every day is good for our heath.主语是什么,为什么 sports+s I think doing sports （ ）our healthA:are good for B:is good for Doing sports is good for health.为什么用is不用are? 英语:Doing more sports is good _____ our health.A.for B.on C.about _____ sports is good for us.前面用To do还是Doing.为什么? doing sports is good for my health为题的作文 附带翻译 doing sports is a good w() to relax and keep f() ,()里填什么 We all know that doing sports is good for our healthWe all know that ____ sports __ good for our health答案是doing和is那为什么要填doing和is呢? Doing sports does good to/for us.Doing sports does good to/for us.Doing sports does good to/for us.Doing sports is good to/for us.这两个句子,一个有be动词,一个没有,它们的差别在哪里啊? 转换同义句Doing some sports every day is good for our healty()good for our health()()some sports every dayhealth才对 打错 doing sports is really relaxing同义句()()really relaxing ()()sports I think doing sports is great --------(fun) Doing sports every day__(be) good for everyone Doing sports is good.（改为同义句） ___good_________.问：Sports are good for people.注：good前的横线最好只填一个或者少量单词,后面到随便. He is good at sports是什么意思