The volcano erupted, lots of people were lying on the beach.	When the volcano ________(erupt), lots of people ______ (lie) on the beach.
When the plane crashed into the skyscraper, I was reading a newspaper.	When the plane _________ (crash) into the skyscraper, I _______ (read) a newspaper.
When the fire started, we were having a barbecue.	When the fire _______ (start), we _______ (have) a barbecue.
I was watching TV when the lightning stroke my house.	I ________ (watch) TV when the lightning _______ (strike) my house.
We were skiing on the Alps when an avalanche occurred.	We _______ (ski) in the Alps wneh the avalanche _______ (occur).
When the doctor arrived, the boy was waiting for him outside the house.	When the doctor ________ (arrive), the boy ________ (wait) for him outside the house.
What were you doing when the phone rang?	What _______ (you/do) when the phone _______ (ring)?
When I was watching television, I fell asleep.	When I __________ (watch) television, I ________ (fall) asleep.
Ben came to our house when we were having dinner.	Ben _______ (come) to our house when we _______ (have) dinner.
How fast were you driving when the police stopped you?	How fast _______ (you/drive) when the police _______ (stop) you?
We were playing football. I kicked the ball and it hit the window.	We _________ (play) football. I ________ (kick) the ball and it _______ (hit) the window.
Tom burnt his hand while he was cooking dinner.	Tom __________ (burn) his hand while he ________ (cook) dinner.
The doorbell rang while I was having a shower.	The doorbell ________ (ring) while I _____ (have) a shower.
We saw an accident while we were walking home.	We _______ (see) an accident while we _______ (walk) home.
Mary fell asleep while she was reading a book.	Mary _______ (fall) asleep while she ________ (read) a book.
The television was on but nobody was watching it.	The television _______ (be) on but nobody ________ (watch) it.
The storm started while we were driving home.	The storm ________ (start) while we _______ (drive) home.
I was having lunch when the police arrived.	I _______ (have) lunch when the police _______ (arrive).
My father was cooking the dinner when he burnt his fingers.	My father ________ (cook) the dinner when he ________ (burn) his fingers.
While I was studying last night, the lights went off.	While I _______ (study) last night, the lights ______ (go) off.
I was doing my exam when my mobile rang.	I ______ (do) my exam when my mobile ________ (ring).
Did you break your leg while you were playing football?	(you/break) your leg while you (play) football?
While they were waiting for a bus, it began to rain.	While they (wait) for a bus, it (begin) to rain.
Did she have an accident when she was driving home?	she (have) an accident when she (drive) home?
Was he cleaning the windows when he fell off the ladder?	(he/clean) the windows when he (fall) off the ladder?
She saw a shark while she was swimming in the sea.	She (see) a shark while she (swim) in the sea.
I wasn't wearing shoes when I cut my foot.	I (not/wear) shoes when I (cut) my foot.
I was taking a shower when somebody knocked at the door.	I (take) a shower when somebody (knock) at the door.