1.teenagers should be allowed to practice their hobbies as much as they want 2. his parents won't allow him to train as much as he would like to 为什么上句话中后面没有to 而第二句后面有啊

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？ As they get older ,teenagers [ ]be treated more like adults.A,should B,have to C,could D,had better Teenagers should learn how ____ as a team first . A.play B Playing C.to play D. can they play we teenagers should refuse drugs.改同义句→we teenagers should ___ ___ ___ drugs. teenagers practice do sth和practice doing sth有什么区别吗Teenagers() allowed to drive in the street A.should not be B.should be not C .not should beD.should't 以及这个题目的知识点和扩展， if teenagers should surf the Internet 作文100字 should teenagers be allowed to go out on weekends是什么意思 Teenagers should be allowed to c-------their own hobbies Should teenagers be allowed to shoose their own clothes? i do not think teenagers should drive cars如何回答 Teenagers should be allowed to make decisions by t_______. teenagers should be allowed to make their own d----- I think teenagers should work on weekends.改为否定句 Should teenagers listen to music while doing homework? Teenagers should __________ (ask) to do chores every day 英语翻译Parents should not be too ______ ______ teenagers. Every night we hear strange noises outside.I think it___be teenagers having fun ,but i am not sureA.should B.could