18. He knocked at the door _________ no one answered.

18. He knocked at the door _________ no one answered. knocked at 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 knoced at 和knocked Is there( ) at home?he knocked at the door and asked. Is there( ) at home?he knocked at the door and asked. He knocked ___an old man and knocked him ___ .A.into,into B.into,down C.down,on D.at onHe knocked ___an old man and knocked him ___ .A.into,into B.into,downC.down,onD.at on 英文同义句转换.A man knocked at the door when he was watching TV.A man knocked at the door _____ he was watching TV I was studying English when he knocked at the door.改错 When he knocked at the door,my aunt was ________ （cook） dinner. He was having dinner____a unknown woman knocked at the door.填when还是while? I knocked at the door (l ) of times ,but he didn't hear it. 是knocked at the door还是knocked on the door knocked at和knocked on有什么区别? knocked at my door 和 knocked my door 区别?knocked at my door 和 knocked my door 区别? He knocked at the door again( )again.There was on sound.A and B but C both D or He was just falling asleep when someone knocked at the door.(改写同义句)He was just ___ to sleep when ___ was a ___ at the door. Knocked