I was eating
ate( was eating, ate ) a hamburger when the phone rang
was ringing( rang, was ringing ).
I broke a tooth
was breaking a tooth( broke a tooth, was breaking a tooth ) when I ate
was eating( ate, was eating ).
He was cycling
cycled( was cycling, cycled ) when he was falling
fell( was falling, fell ) and broke
was breaking( broke, was breaking ) his arm.
I was waiting
waited( was waiting, waited ) in the waiting room when the nurse called
was calling( called, was calling ) my name.
I was gardening
gardened( was gardening, gardened ) when a wasp stung
was stinging( stung, was stinging ) me.
We were having
had( were having, had ) lunch when our friends were arriving
arrived( were arriving, arrived ).
The team was winning
won( was winning, won ) when the referee blew
was blowing( blew, was blowing ) the whistle.
When we crashed
were crashing( crashed, were crashing ) into a tree we were driving
drove( were driving, drove ) home.
They were taking
took( were taking, took ) pictures when it was starting
started( was starting, started ) to rain.
She was taking
took( was taking, took ) money out of a cash machine when a thief came and was taking
took( was taking, took ) her money.
He was making
made( was making, made ) tea while I was telling
told( was telling, told ) him a joke.
He was watching
watched( was watching, watched ) TV when his son arrived
was arriving( arrived, was arriving ).