1. Mary (take) a shower when his husband (arrive).
2. Mark (call) my name while I (talk) on the phone, so I (not hear) him.
3. Lucy (study) when suddenly her brother (start) to cry.
4. While she (cook), her child (go) outside!
5. I (not know) that they (play) basketball all morning, I (be) so worried.
6. Why you (interrupt) me while I (explain)? Now, everybody is confused!
7. Kate (laugh) all evening because Sam (tell) her a very funny joke.
8. Michael (swim) when his mother (come) to tell him the good news.