III. Перепишите следующие предложения и переведите их на русский язык, обращая внимание на разные значения слов it, that, one.

1. The quality of the packed lunch can vary from terrible to very good; it depends on who makes it.
2. One in five people say that all they have breakfast is a cup of coffee.
3. One should take part in scientific work.
4. It's clear that he's made a mistake.