They ... (wash) the dishes at 5:30 pm yesterday.
were washing
Emily ... (not sing) all morning.
wasn't singing
I ... (go on a school trip) at 9am yesterday morning.
was going on a school trip
Brian ... (not lay) the table when I walked in.
wasn't laying
We ... (sit an exam) when a fire alarm went off.
were sitting an exam
We ... (wait) for the bus when it started raining.
were waiting
The Andersons ... (not watch) TV yesterday morning.
weren't watching
She ... (cook) dinner at 5 o'clock yesterday afternoon.
was cooking
While we ... (walk) in the park, Tom ... (do) his homework
were walking/was doing
Alan ... (not listen) to music at 3 o'clock yesterday afternoon.
wasn't listening