What (you/do) when I (call) you last night?
were you doing /called
While Tom (read) , Amely (watch) a documentary on TV.
was reading, was watching
Marvin (check) his email when his wife (come) home.
was checking / came
The thief (sneak) into the house, (steal) the jewels and (leave) without a trace.
snuck / stole/ left
Everybody (listen) while the teacher (explain) the tenses.
was listening / was explaining
She (wake) up and (look) at her watch.
woke/ looked
While we (do) a sight-seeing tour, our friends (buy) souvenirs.
were doing / were buying
