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