to make an effort to improve your performance
hacer un esfuerzo para mejorar tu rendimiento (haseer un esfuerzo para mejorahr tu rendimiyento)
"You need to pull your socks up if you want that promotion."
"Necesitas hacer un esfuerzo si quieres esa promoción." (Necesitas **aser un esfuerzo** si quieres esa promocion)
without any logical reason to doubt; with full certainty
to prepare for something
to repair a relationship
to pretend to be brave when you are actually scared or worri...
to subtly insult or criticize someone
to make others happy by being kind or cheerful