The PAST PROGRESSIVE: 1. While they
(travel) to China, Marco
(keep) a diary
2. Mrs. White
(drive) past a house in Main Street when she
(sce) the ground floor on fire.
3. While he
(fly) off the Miami Coast, the pilot
(see) sharks approaching the swimmers.
4. The fireman
(fight) the fire on a balcony below when he
(hear) someone's shouts.
5. She
(die) while she
(run) after a bus.
6. We
(have) dinner when the electricity
(go) off.
7. She
(think) of something else while you
(talk) to her
8. I
(see) her while I
(look) out of
the window.
9. While the teacher
(talk), the students
(look) at an insect on the ceiling​