1.When I crossed the street, a policeman stopped me.
2.Look at the sky: it's 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.Tomorrow I will bake my favorite cake.
7.Listen! Somebody's knocking on the door.
8.Hurry up! The bus will leave in 5 minutes.