When _____ he _____(study) for the exam?
was he studying
They _____ (have) a picnic in the park.
were having
The children _____(play) outside in the afternoon.
were playing
I _____(read) a book when the phone rang
was reading
She _____ (swim) in lake Michigan last summer
was swimming
He _____ (fix) his car all day yesterday.
was fixing
We _____ (not/play) tennis yesterday
weren't playing
What _____ she _____ (talk) about?
was she talking
They _____ (visit) their grandparents.
were visiting
