Open the brackets into necessary form:
Example: We (to enjoy) the countryside when we spotted something was wrong. - We
were enjoying the countryside when we spotted something was wrong.
1. When I phoned my friends, they (to play) monopoly.
2. The kids (to play) in the garden when it suddenly began to rain.
3. I (to practice) the guitar when he came home.
4. I (to speak) to her but she didn't hear me.
5. I didn't go for a walk because it (to rain).
6. When you telephoned I (to sweep) my room.