impose/set limits/boundaries

[beachboy]

You can´t let your students do whatever they want. You have to impose (or set?) limits (or boundaries?)
Are the four alternatives correct? Which one is more common in everyday English?

[bhaisahab]

You can´t let your students do whatever they want. You have to impose (or set?) limits (or boundaries?)
Are the four alternatives correct? Which one is more common in everyday English?

I would use "set limits".