1. When I was crossing the street, a policeman stopped me.
2. Look at the sky: it is getting dark.
3. I usually listen to music when I do my homework.
4. Where are you going? - I'm going to the cinema.
5. Do you often go to the cinema?
6. I will bake my favourite cake tomorrow.
7. Listen! Somebody's knocking at the door.
8. Hurry up! The bus leaves in 5 minutes.