10. Use Past Continuous or Past Simple.
1) We (have) a walk, when we (see) Mary.
2) She (go) to the cinema, when the police (stop) her.
3) I (have) breakfast, when my brother (phone) me.
4) When the teacher (come) in, you (play) football in the classroom.
5) They (wait) for the bus, when it (start) raining.
6) The telephone (ring) while I (have) a bath.
7) The accident (happen) while Janet (cross) the road.
8) When my sister (call) me, I (have) a cup of tea.
9) You (wait) on the platform, when the train (arrive) .
10) When I (go) out, they (chat) on the Internet.