根据上下文填上正确的介词或副词1.He did not know how to fight,but he knocked

根据上下文填上正确的介词或副词
1.He did not know how to fight,but he knocked the boxer ________.
2.This flowerpot is broken,Who knocked it __________?
3.I knocked ________early yesterday and went to a foodball match.
4.Listen!Someone is knocking _________ the window!