Keep Calm and Carry On was a motivational poster produced by the British government in 1939 in preparation for the Second World War. The poster was intended to raise the morale of the British public, threatened with widely predicted mass air attacks on major cities

TO CARRY ON doing something = To continue doing something
–         Carry on, I’m listening.  I’m very interested in…
–         I went to bed but they carried on talking
–         Rescue operations were carried on in spite of the storm.

  Llevar a cabo
–         An investigation is being carried out by the police
–         You should do your best to carry out your promises.
–         They carried out their plan without incident.