Complete the sentences with the correct form of verb expressions from Exercise 4.
1. Illegal downloading didn't ... until the digital age.
2. Did you know that petrol is a crime in some
countries?
3. The ban a time when graffiti was very popular.
4. The judge didn't of the defendant's argument
5. that you don't drop rubbish - it's illegal here.

Verbs: be present now, understand your opinion, have started from a certain time, start to do something,be careful,be without​