The fire started when.......(cook dinner)
she was cooking dinner.
We were sleeping when......(storm start)
the storm started.
I was cleaning my garage when......(package arrive)
the package arrived.
The music was playing loudly when..... (police arrive)
the police arrived.
A friend stopped by while......(eat lunch)
he was eating lunch
I was walking my dog when......(see squirrel)
he saw a squirrel.
It became windy when....(walk home)
I was walking home.
The soccer game was ending when.....(start rain)
it started to rain.
They were dancing when......(fall)
they fell.
I was arriving home when....(see accident)
I saw an accident.
The tree fell on me while.......(study for test)
I was studying for my test.
I saw a deer while.......(ride bike)
I was riding my bike.