past simple or continuous

Gap-fill exercise
By JUan Ignacio Montorio

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

1. Alice (work) on the internet when she (find) an interesting page.
2. I (walk) through the airport when I (lose) my passport.
3. While I (listen) to music, I (fall) asleep.
4. I (have) breakfast and then (go) to school.
5. We (visit) Beijing while we (travel) in China.