Verb conjugation of "shear" in English

I bought the ticket very quickly and ran to the gate. A stewardess was waiting for me and waved. She shouted that I should hurry up. I ran as fast as I could and entered the gate leading to the plane.
I was born in Lima and for 14 years I have been living near Frankfurt. I am divorced and I have a little girl and an older son from my first marriage. My son is already in kindergarten.
I teach at the university of natural sciences. I have studied at the ETH in Zurich. At that time I started learning Spanish and I found Vocabulix. Since then I'm using it regularly with joy.