1 When I met him, he was studying Biology.

2 She was working when I phoned her.

3 Were you going to college when I saw you, or were you on your way to the sports centre?

4 When I saw Paul, he wasn't watching TV. He was in the kitchen.

5 Was Lucy having breakfast when you left the house, or was she in bed?

6 We were driving home when the police stopped us.