Answer:
Fill in the blanks with a correct form, the PAST SIMPLE or the PAST CONTINUOUS:
1. While they were travelling (travel) to China, Marco kept (keep) a diary.
2. Mrs. White was driving (drive) past a house in Main Street when she saw (see) the ground floor on fire.
3. While he was flying (fly) off the Miami Coast, the pilot saw (see) sharks approaching the swimmers.
4. The fireman was fighting (fight) the fire on a balcony below when he heard (hear) someone's shouts.
5. She died (die) while she was running (run) after a bus.
6. We was having (have) dinner when the electricity went (go) off
Explanation:
Past simple is used when there is an action in the middle of another. This is, something was happening, there was a scence in "past continuous" when suddenly something happened. This action that interrupts everything is in "past simple".
Past continuous refers to a long action which takes time. When it comes to the simple past, is just an action, an specific point in time.