by the time mum came home her con didin't had cooked the dinner.
did by the time mum came home her con had cooked the dinner?
sandra didn't had been writing a report for three hours before she realized it was too late.
did sandra had been writing a report for three hours before she realized it was too late?
this bridge didn't was built in 1953.
did this bridge was built in 1953?
tom was reading a very interesting book while his dad didn't was watching a football match.
did tom was reading a very interesting book while his dad was watching a football match?
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