When
Joseph __________ (study) yesterday when his cat _____ (die).
Joseph was studying yesterday when his cat died.
Who _____ (try) to open the door?
Who was trying to open the door?
They _____ (cook) dinner when I arrived.
They weren't cooking dinner when I arrived.
I _______ (cook) dinner while Melanie _____ (work) upstairs.
I was cooking dinner while Melanie was working upstairs.
Last week the class _______ (do) projects about the universe.
Last week the class was doing projects about the universe.
I __________ (type) my report, when the electricity ____ (go) off.
I was typing my report when the electricity went off.
_____ (you/read) when the electricity _______ (go) off?
Were you reading when the electricity went off?
Joanna and Tania ________ (carry) an umbrella when it started to rain.
Joanna and Tania weren't carrying an umbrella when it started to rain.
Tania _____ (explain) the game while the class _____ (listen).
Tania was explaining the game while the class was listening.
Children ________(have) so much fun during the English class.
Children were having so much fun during the English class.
Tania _________ (wash) the dishes, when the telephone ______ (ring).
Tania was washing the dishes, when the telephone rang.
_______ (you/take) your dog for a walk when the car _______ (crash) into the shop?
Were you taking your dog for a walk when the car crashed into the shop?
It ______ (rain) while 5ºA and 5ºB were playing tennis earlier.
It wasn't raining while 5ºA and 5ºB were playing tennis earlier.
My brother ______ (use) the computer while we ______ (pack) for our trip.
My brother was using the computer while we were packing for our trip.
The volleyball team _________(win) the match when it started to rain.
The volleyball team was winning the match when it started to rain.
Alfredo _____ (lose) his wallet when he _________ (jog) in the park.
Alfredo lost his wallet when he was jogging in the park.
When you _____ (arrive) at the party ____ (Isaac/dance)?
When you arrived at the party was Isaac dancing?
Greg ________ (study) when we went to his house.
Greg wasn't studying when we went to his house.
While men _______ (prepare) the barbecue, women ________ (serve) drinks.
While men were preparing the barbecue, women were serving drinks.
People ________ (scream) at the singer while he _________ (sing).
People were screaming at the singer while he was singing.