We ...... (play) tennis when Jack ...... (break) his leg.
were playing / broke
Homer...... (watch) a film when he...... (hear) the noise.
was watching / heard
What ...... (you/do) at 10pm last night? It was really noisy.
were you doing
I ...... (sit) in a restaurant when you ...... (call).
was sitting / called
When I (come home), my dog ...... (swim) in the pool.
came home / was swimming
When I ...... (leave) the house, it ...... (snow).
left / was snowing
He ...... (work) in the garden when he ...... (find) the money.
was working / found
When the guests ...... (arrive), John...... (cook) dinner.
arrived / was cooking
Why ...... (you/cry) when I ...... (call) you?
were you crying / called
They ...... (have) dinner when the police ...... (come) to the door.
were having / came
When the teacher ...... (walk) into the room, everyone ...... (work).
walked / was working
Homer...... (sleep) when Bart ...... (arrive).
was sleeping / arrived
When the light ...... (go) out, I ...... (have) a shower.
went / was having