You don't "se"
I'm the verb pelearse in the ellos form (preterit)
What is se pelearon?
You shaved last night.
Te afeitaste anoche.
You shared the toys.
Compartiste los juguetes
I mean "we approached the owner/manager"
What is nos acercamos el dueno?
Translation: They went shopping
What is "fueron de compras"?
Translation: she put the book in her backback
What is "ella puso el libro en su mochila"?
Translation: We left a tip for the waiter.
What is "dejamos una propina para el mesero"