Five, four, three, two, one, zero.
Can you [bring] me my laptop, because I have to do [some] homework on it - if I don't do this I will [get] a zero. (Key English Test; A2; Portuguese)
The temperature is expected to drop to ten degrees below zero tonight.
We have to learn that [it] is not natural for a lion [to live] in a country where, in winter, [the] temperature can fall below zero. (First Certificate in English; B2; Italian)