Change the verb into the correct form:
1. The phone (ring) while I (sleep).
2. I (cook) dinner when Sue (arrive).
3. When the dog (bark), they (try) to sleep.
4. While we (dance), the music (stop).
5. Sam (listen) to music, so he (not hear) you.
6. While we (talk), someone (steal) my bag.
7. The prisoner (run) away while the policemen were (joke).
8. My boss (call) me while I (eat).
9. While I (work), my husband (ask) my help.
10. When they (come) in everybody (watch) the movie.
11. You (leave) the office when it (start) to rain.
12. Justin (park) his car, when the engine (stop) working.
13. They (have) a nice time when the baby (start) to cry.
14. The kids (play) when the mothers suddenly (call) them.
15. We (sing), when we (hear) a loud noise.