1. We must leave now or we will be late for the concert.
2. If Pablo studies English every day, he’ll pass the exam.
3. If I had known then what I know now, I would have done things differently.
4. It was one the most stressful weeks of my life. When the weekend arrived, I broke down and cried.
5. We are having such a great time on holiday. We don't want to go home!