1. Where is Nick? - He is working in the garden.
2. What are you doing? - I'm waiting for my brother.
3. He writes letters to his brother every week.
4. Take an umrella, it's raining.
5. It was cold, that's why I closed the window.
6. He was angry because they had been late./were late
7. He was a student 2 years later.
8. They were students 3 years later.
9. My sister wasn't a student last year.
10. He wasn't on a lesson yesterday.