Verb conjugation of "colaborar" in Spanish

I ordered a cab at four o'clock in the morning which took me to the Central Bus Station. I was much to early because the bus would go just at seven o'clock. Anyway I was sitting there and listening to music.
Let me talk about nicer things in this email. In the last mail we spoke about the poems that we have read in our last spring break. We are not of the kind who love partying all night. We came to relax.
She started to walk with us and one could observe that she had lost some of the naivity many children have, due to the fact that she started to be a sales person long before she reached twelve.