Exercise such as playing sports is fun中为什么要用playing而不是play?

Exercise such as ______(play) ping-pong ball is fun. Exercise such as playing sports is fun 求翻译 Exercise such as playing sports is run,翻译, Exercise such as playing sports is fun中为什么要用playing而不是play? Exercise such as ( ) id very fun A.swim B.to swim C.swimming D.swims such as such as ,as such as ,as exercise is___as any other to lose weightA.such a useful way ,B as useful a way.两个都对吗?such后接名词 按道理A对的? exercise such initiative as fall within their sphere在各自的工作范围内发挥主动性as fall within their sphere这部分就看不懂了 such as与such...as...的区别? such as和such...as...的区别 Exercise 2 is as easy as Exercise 3.(英译中) such as such that as such such...that...such...that..such as to such.as to的区别与具体用法such as such that as such such...that...such as to such.....as to Exercise is ______as any other to lose unwanted weight.A.such a useful way B.as useful a way为什么选B不选A? such as翻译 such as中文翻译 such as的用法