Exercise.

Choose the correct form of the verb...
  1. The children  [broke] the window while they  [were playing] football.
  2. When she  [came] , we  [were having] dinner.
  3. While I  [was going] to work, I  [met] a friend.
  4. When I  [met] him, he  [was wearing] a blue jacket.
  5. While I  [was cleaning] the room, I  [found] this key.
  6. We  [were sitting] in the living room and we  [were drinking] wine.
  7. While Jane  [was reading] a book, she  [fell] asleep.
  8. While Anne  [was painting] her room, she  [fell] off the ladder.
  9. How fast  [were you driving] when the police  [stopped] you?
  10. What  [were you doing] when I  [called] you?