Past simple VS Past continuous

While I walked / was walking to school, it started/ was starting to rain.

John arrived / was arriving while my sister made / was making breakfast.

I didn't meet / wasn't meeting my teacher while we shopped/ were shopping

............. my friends were snowboarding, they saw a famous musician.(while/when)

.............you sent me the message, I was doing an exam (while/when)

My brother climb / was climbing a tree when he fell / was falling

I wasn't doing anything .......... you phoned. (while/when)

My mum was swimming in the sea ...... someone stole her purse. (while/when)

She didn't sit / wasn't sitting on the sofa when she heard / was hearing a strange noise.

We found some money ............ we were playing outside (while/when)

When the teacher came / was coming into the classroom, we played / were playing cards.

I was tidying my bedroom ............ you phoned me (while/when)