Avoid the goombas and bottomless pits and you'll be fine
beat level 7a
Beat the boss as a mini person
Beat bowser, and huge bowser on the last level.
You need to beat level 2 and 5 as a mini mario to get to them worlds
beat the last level in world three
Beat Bowser simple :)
dance
No because in Super Mario Bros you can change characters. In Super Mario Flash you can't change characters. Plus, you can do a lot more stuff in Super Mario Flash and it's less intense to beat a level.
You can't.
defeat it with bombs
beat the level by going through a secret pipe.(red or Green)
you jump on him