What ______ you ________(do) when the thunderstorm started?
were doing
Where ______ you______(stand) when the lightning ______(hit) the tree?
were standing/hit
I _________(walk) across the main square when it ________(happen).
was walking/happened
I ______(have) lunch when the garage_______(flood).
was having/ flooded
Jane__________(play) tennis when it started raining.
was playing
She ________(not/listen) when her mum ________(call) her.
wasn't listening/called
We _________(watch) television when the hurricane _________(break).
were watching/broke
My mum _______(sit) in the park when it _______(start) to rain.
was sitting/started