I think teenagers should work on weekends.改为否定句

i do not think teenagers should drive cars如何回答 I think teenagers should work on weekends.改为否定句 many teenagers think their I think it must be teenagers having fun.这句话的句子结构是怎样的 but my friends and i think it must be teenagers having fun为什么用having I think teenagers ___(should,allow) to make decisions by themselves 怎么填 I don't think teenagers should get their ears pierced,_______?详见↓-I don't think teenagers should get their ears pierced,_______?A.do I;B.don't I;C.should they;D.shouldn't they为什么？ i think playing computer games has a bad effect on teenagers.这句话的主语是 i 为什么 -I think teenagers should be aloud to make __for ourselves.-I disagree with you.I think it important to take parent's advice.A.suggestionB.appointmentC.attentionD.decision teenagers Every night we hear strange noises outside I think it ____ be teenagers having fun ,though I'M not sureA.must Bshould C.will D.could Every night we hear strange noises outside.I think it___be teenagers having fun ,but i am not sureA.should B.could -----i do not think teenagers should drive cars,---（i agree）,they are not serious enough.怎么翻译,有无固定用法,或回答 . I think teenagers should be allowed to go out with their friends in the evening.______It is not safe enough.A.agree B.I do not think so C.I do not know D.I disagree 1.Write a letter to theSunday Mail and express your opinion.Dear Sir or Madam,I think /believe that__________.I agree/disagree that ________________.I think it is fair/unfair for children to__________________________________.I think childrenshould/sh 句子My friends and I think it must be teenagers having fun.中 为什么最后的have要用动词ING形式 When I think about teenagers in Africa and South America,( )don't have all of those thingsA they B who C which D that i think teenagers should ______ drive.they are not serious enough1.be allowed to 2.not be allowed to 3.not allow to