i think playing computer games has a bad effect on teenagers.这句话的主语是 i 为什么

i think he likes playing volleyball改为否定句 I think we must p__ playing football more I don't think he likes playing soccer.(同义句替换）---- ---- ----,he---- ----playing soccer. I don't think he likes playing soccer (同义句替换））---- ---- ----,he---- ----playing soccer I think playing computer games is a w______ of time,so I never play them. I think swimming is more dangerous than playing table tennis同义句转换I think playing table tennis is _____ _____ than swimming 初一英语题,同意句转换!I think playing soccer are very exciting.=I think _______ exciting _______ ________ _______. I don't think he likes to play tennis这两句各有什么错误 i do not think he likes playing tennis I think playing basketball is interesting里为什么play要加ing I think playing basketball is boring 又不是正在进行时,为什么要加ing? I think playing table tennis is interesting and A happy B fun C strong D favourite i think (playing)is (不填）great fun为什么括号里这么填? I think it is not w____ to spend hours playing football after school I think playing computer games too much is bad for us为什么这里要用is? you ____(play,are playing) basketball,I think.选词填空 I think what really offends is not the winning but the playing. you(play ,are playing)basketball,i think 括号里选什么 Playing games on computers___much time,I think.A.spends B.takes C.pays 为啥选B