You must knock at the door before you e_____the teachers’office.

You must knock at the door before you e_____the teachers’office. knock on;knock at;knock over;knock you must ____(knock)on the door before you enter must at 8th off bus get you the stop.连词成句,请尽快答复, When you ____ others,you should say sorry at once.A,knock toB,knock atC,kWhen you ____ others,you should say sorry at once.A、knock toB、knock atC、knock onD、knock into If you someone,you should say “I’m sorry”.A.knock at B.knock over C.knock into D.knock out的答案是什么 为什么 knock on knock into knock at knock up if I were you I will knock at Please ____(knock)at the door when you come in. knock at的意思 knock at的意思 knock into sb和knock at knock on与knock at的区别 knock at,knock onWhat's the differance? knock you down 造句 英语完成对话,每空一词A:Will you ____ me plant this tree piease?B:Of course ! What do you _____me to do ?A:Well , I've ____this hole,Hold this stick_____I knock is inB:Ok! Is it _____?A:_____or lessB:What's_____?A:The tree must be _____in th scientists are confident that they can make lasers which can ________missilesA knock downB knock outC knock intoD knock offYuo think you`re poor,but look at ter people in really poor countries---it`s all__.A relativeB simpleC similarD reatedHe__down Before you get into the teachers' office.You must knock( )the door.A.on B.in C.to