to start working seriously
comenzar a trabajar seriamente (comenzar a trabajar seriamente)
"If you want to pass the exam, you’d better buckle down and study."
"Si quieres aprobar el examen, mejor buckle down y estudiar." (Si quieres aprobar el examen, mejor buckle down y estudiar.)
to be extremely frustrated and have no patience left
someone who will never be your friend
To listen very attentively.
to speak honestly without sugarcoating
completely under someone's control
a decision has not yet been made