Someone knocked on my door just now.But he left ------ I could answer the bellA.whenB.before为什么不用before是用before，打错了。为什么用它呢，而不用when？

someone knocked me on the head可以这么说吗：someone knocked my headsomeone knocked me on the head可以这么说吗：someone knocked my head请问这句话有木有问题? I was cleaning my bedroom while someone knocked on the door改错 someone knocked( )the door while i( )my houseworka.at,were doingb.at,was doingc.on,was doingd.on,were doing 是knocked at the door还是knocked on the door knocked at和knocked on有什么区别? Someone knocked on the door and Jimmy hurried to see who _ was.A one B .it C .he D.that Knocked I think someone is _____at the doorA,knocks B.knocking C.knocked Dknock I 'm sure I see you _____ A,everywhere B,nowhere C.somewhere I () my brother when someone knocked at the doorI () (telephone)my brother when someone knocked at the door I heard someone ____(knocking/knocked)at the door just now.那用knocked也满足hear加从句呀？ My cat___a cup of water and ran away.A.knock at B.knocked over C.knocked out D.knocked on 英语翻译I knocked into someone and fell over onto my shoulder具体是fell over onto my shoulder不理解如果说是摔到肩膀的意思 我感觉应该用ON啊 Someone knocked on my door just now.But he left ------ I could answer the bellA.whenB.before为什么不用before是用before，打错了。为什么用它呢，而不用when？ 有个选择题 大家帮帮忙 Just after going to bed,------.Just after going to bed,------.A. John heard someone knocking at the door. B. someone was knocking at the door C.the door was knocked at by someone D. there was a knock on the doorples te wave someone on to cheat on someone the girl was ___her bicycle on her way home.(knocked over/knocked off) He__a glass of milk just now.He was very careless.a.knocked.b.knocked on.c.knocked over.d.knocked oHe__a glass of milk just now.He was very careless.a.knocked at.b.knocked on.c.knocked over.d.knocked off