1. Felix/ phone/ the fire brigade/ when the cooker/ catch/ fire
`->` Felix phoned the fire brigade when the cooked caught on fire.
2. when the starter/ fire/ his pistol/ the race/ begin
`->` The race began when the starter fired his pistol.
3. he/ sit/ in the garden/ when/ a wasp/ sting/ him/ on the nose
`->` He was sitting in the garden when a wasp stung him on the nose.
4. while/ he/ run/ for a bus/ he/ collide/ with a lamp post
`->`He collided with a lamp post while he was running for a bus.
5. Vicky/ have/ a beautiful dream/ when/ the alarm clock/ ring
`->` Vicky was having a beautiful dream when the alarm clock rang.
`6. `when/ Alex/ see/ the question/ he/ know/ the answer/ immediately
`->`When Alex saw the question, he knew the answer immediately.
7. the train/ wait/ when/ we/ arrive/ at the station
`->`The train was waiting when we arrived at the station.
8. Sarah/ have/ an electric shock/ when/ she/ touch/ the wire
`->`Sarah had an electric shock when she touched the wire.
9. when/ the campers/ wake/ they/ see/ the sun/ shine
`->`When the campers woke up, they saw that the sun was shining.