While I _________ (walk) to school, I saw an old friend.
had walked
was walking
walked
By the time we arrived, the movie _________ (start).
had started
was starting
started
She _________ (already/eat) dinner before we invited her.
was already eating
already ate
had already eaten
He fell asleep while he _________ (watch) TV.
was watching
watched
had watched
They _________ (never/be) to Paris before their honeymoon.
never were
were never
had never been
I _________ (finish) my homework before my mom got home.
finished
was finishing
had finished
When he entered the room, everyone _________ (talk).
was talking
talked
had talked
We were tired because we _________ (walk) all day.
walked
were walking
had walked
I _________ (read) when my phone rang.
was reading
read
had read
They _________ (leave) before we arrived.
were leaving
left
had left
We _________ (arrive) at the airport two hours ago.
were arriving
arrived
had arrived
She _________ (finish) her homework and then watched TV.
finished
was finishing
had finished
I _________ (lose) my keys yesterday and couldn't get into my house.
had lost
lost
was losing
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
waited
had waited
