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I was playing when my brother arrived -
I was cleaning my room while my cousin was cooking a cake -
I was walking home when I saw my best friend -
I was riding in my bike when a dog barked at me -
when I was getting home, the door was closeding -
I was shaking the bedroom while the cat was playing -
I was cooking when they called me on the phone. -
My father arrived while I was singing -
I was studying while my mum was cooking -
I was sweeping while listening to music