Expresiones con verbos claves - Verbo "to bite"

Gil's biting off more than he can chew. He wants to run a business, a school and give lessons.

Every time I want to talk to him and tell him the truth I have to bite my tongue.

Eric bit my head off because I missed a penalty shot at the game.

We'll have to bite the bullet and cut down on some things if we want to pay the bills.

Many people think Communism has bitten the dust. What do you think?