round the clock

adverb

rund um die Uhr

round-the-clock

adjective

round-the-clock surveillance/activity

Überwachung/Aktivität rund um die Uhr

round the clock

Espagnol

Italien

Complétez la séquence avec la proposition qui convient.

We didn't open the door because we … the key.
- couldn't find
- could find
- could