(Sarah / study) for the biology exam?
Was Sarah studying
Lucas (swim -negative) at the beach, he (swim) at a lake.
wasn't swimming / was swimming
Who (you / call)?
were you calling
The waiter (work -negative) yesterday.
wasn't working
What (the teacher / explain) yesterday?
was the teacher explaining
The dog (eat) its food earlier.
was eating
Where (the kids / go) earlier today?
were the kids going
What (the woman / drink)?
was the woman drinking
The superheroes (fly - negative).
weren't flying
Matt and Roger (play -negative) tennis, they (play) badminton.
weren't playing / were playing
We (learn) English in the first grade.
were learning
What (you / do) yesterday?
were you doing
Who (ride) the bike?
was riding
I (sleep - negative) last night
was not sleeping
They (speak -negative) Italian, they (speak) German.
weren't speaking / were speaking
Why (the baby / cry?)
was the baby crying