[Sửa]Occur, take place, come about, go on, come to pass,develop; betide, chance, prove, materialize, Colloq transpire,come off, Slang cook: What is happening? As it happens,everyone has already left.
[Sửa]Befall, become of: What willhappen to me if I refuse?
[Sửa]Happen on or upon. come upon,chance or hit on or upon, stumble on or upon, find, turn up,encounter, meet with: It was then that I happened on an oldletter of his.