1. I met her during my stay in Paris last summer. (while)
 ____________________________________________________
2. During class, my mom called. (while)
 ____________________________________________________
3. During dinner, someone rang the doorbell. (when)
 ____________________________________________________
4. The phone rang. She wrote a letter. (when)
 ____________________________________________________
5. We had the picnic. It started to rain. (while)
 ____________________________________________________
6. I wrote the email. The computer suddenly went off. (while)
 ____________________________________________________
7. During the soccer match, it began to snow. (while)
 ____________________________________________________
8. He discovered he had lost his wallet. Bob went shopping with his pals. (while)
 ____________________________________________________
9. During the call, I dropped my phone and broke it. (while)
 ____________________________________________________
10. The scientists carried out the experiments. They found out something very innovative.
(while)
 __________________________________________________