While I _________ (walk) to school, I ran into an old friend.
walked
was walking
had walked
By the time we arrived, the movie _________ (start).
started
had started
was starting
She _________ (already/eat) dinner before we invited her.
was already eating
had already eaten
already ate
He fell asleep while he _________ (watch) TV.
watched
had watched
was watching
They _________ (never/be) to Paris before their honeymoon.
were never
never were
had never been
I _________ (finish) my homework before my mom got home.
was finishing
had finished
finished
When he entered the room, everyone _________ (talk).
had talked
was talking
talked
We were absolutely exhausted because we _________ (walk) all day.
walked
were walking
had walked
I _________ (read) when my phone rang.
had read
was reading
read
They _________ (leave) before we arrived.
left
were leaving
had left
We _________ (arrive) at the airport two hours ago.
had arrived
were arriving
arrived
She _________ (finish) her homework and then watched TV.
was finishing
had finished
finished
I _________ (lose) my keys yesterday and couldn't get into my house.
was losing
lost
had lost
They _________ (buy) a new car last weekend.
bought
had bought
were buying
The teacher _________ (explain) the lesson and then gave us some exercises.
was explaining
explained
had explained
She _________ (wait) for an hour before the bus came.
was waiting
had waited
waited
