1 was sailing / hit
2 were dancing / heard
3 was watching / stepped
4 were waving / heard
5 were sleeping / exploded
6 was working / asked
Объяснение:
0. Her car was driving (drive) through a tunnel in Paris when it crashed (crash).
1. It was sailing (sail) across the Atlantic Ocean when it hit (hit) an iceberg.
2. People were dancing (dance) in the streets after they heard (hear) he was finally free.
3. The world was watching (watch) on TV when Neil Armstrong stepped (step) on the Moon.
4. The crowds were waving (wave) at the president when they heard (hear) the gunfire.
5. While people in the neighbouring town of Pripyat were sleeping (sleep), a nuclear reactor exploded (explode).
6. While Amelia Earhart was working (work) one day, Captain Railey asked (ask) her to fly to the UK from America.
