He (cook) when the fire (start)
He was cooking when the fire started
He (eat) dinner when his mum (call) him
He was eating dinner when his mum called him
They (have) a picnic when it (start) raining
They were having a picnic when it started raining
He (ski) when he (break) his leg
He was skiing when he broke his leg
He (walk) down the street when he (fall) into a manhole
He was walking down the street when he fell into a manhole
He (run) when he (slip) on a banana skin
He was running when he slipped on a banana skin
He (steal) a computer when the police (arrest) him
He was stealing a computer when the police arrested him
He (swim) when he (see) a shark
He was swimming when he saw a shark
He (look) at a painting when the thief (steal) his wallet
He was looking at a painting when the thief stole his wallet
They (chat) when they (drive) off a cliff
They were chatting when they drove off a cliff
He (dance) when his trousers (split)
He was dancing when his trousers split
