Fun with the past continuous

While I (a)   (watch) the latest episode of my favorite TV series, my friends were playing board games.

What were you doing (a)   the power went out last night?

While the chef was preparing dinner, the guests (a)   arriving at the restaurant for the special event.

While the chef was preparing dinner, the guests (a)   arriving at the restaurant for the special event.

Was she fixing the car when it suddenly (a)   (break) down?

What (a)   (you/think) about while you were waiting for the bus?

(a)   the children were playing in the yard, their parents were preparing dinner inside.

I was working on my project all afternoon while my roommate (a)   (take) a much-needed nap.

As the team (a)   (celebrate) their victory, their parents were preparing a gathering at the school auditorium.

Despite the teacher tried hard to explain the concept, none of his students (a)   (pay) attention.