I was (doing)...... , when (did).....
We were (doing)...... when (did).....
past continuous...... past simple
When I was staying in my hometown,
the novel corona virus began.
I was walking on the road,
when a stranger hit my back.
We were going mountains,
when ....
When I was traveling in Yunnan province
I suddenly got a stomach ache and a fever.
I was going to the mountains,
when it started to rain.
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I was staying in Shanghai, when I got a headache, and I didn't have time to see a match.
My daughter lost her balloon.
She was crying.
Were you driving a car?
I couldn't repair it.
Later I called the phone number, and waited an hour.
The repairman got there and he helped repair my car.
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