He cleaned/was cleaning the kitchen when she arrived.
was cleaning
She wasl walking / walked to school while John was sleeping.
was walking
Is/ Was Peter baking a cake yesterday?
Was
They aren`t shopping / weren`t shopping last Saturday morning.
weren`t shopping
She was cooking when the telephone was ringing/rang.
rang
They were playing/played all day yesterday.
were playing
He was fizing / fixed his car when his mobile phone rang.
was fixing
They weren`t playing / didn`t play basketball at 4 o`clock yesterday.
weren`t playing
While I was visiting / visited my grandparents , my sister was watching a film.
was visiting
He didn`t wear / wasn`t wearing a coat when it started to rain.
wasn`t wearing
I was walking/walked around the city all day yesterday.
was walking
At 7 o`clock last night, we were having / had dinner.
were having
They aren`t painting/weren`t painting their house last weekend.
weren`t painting