While she _________ (cook), the telephone ______ (ring).
While she was cooking, the telephone rang.
What were you doing at this time yesterday?
I was ....
They _____ (cook) dinner when I arrived.
They weren't cooking dinner when I arrived.
He _____ (lose) his wallet while he _________ (run) in the park.
He lost his wallet while he was running in the park.
What was your best friend doing yesterday morning?
He/She was...
Greg ________ (study) when we went to his house.
Greg wasn't studying when we went to his house.
Joseph __________ (study) yesterday when his cat _____ (die).
Joseph was studying yesterday when his cat died.
What were you doing when the phone rang?
I was ...
We ________ (carry) an umbrella when it started to rain.
We weren't carrying an umbrella when it started to rain.
I __________ (do) the homework, when the electricity ____ (go) off.
I was doing the homework, when the electricity went off.
What were you doing when the lights went out?
I was ...
It ______ (rain) while we were playing tennis earlier.
It wasn't raining while we were playing tennis earlier.