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.
had already eaten
already ate
was already eating
He fell asleep while he _________ (watch) TV.
watched
had watched
was watching
They _________ (never/be) to Paris before their honeymoon.
never were
had never been
were never
I _________ (finish) my homework before my mom got home.
was finishing
finished
had finished
When he entered the room, everyone _________ (talk).
was talking
had talked
talked
I _________ (read) when my phone rang.
read
was reading
had read
They _________ (leave) before we arrived.
left
had left
were leaving
We _________ (arrive) at the airport two hours ago.
were arriving
had arrived
arrived
She _________ (finish) her homework and then watched TV.
finished
had finished
was finishing
I _________ (lose) my keys yesterday and couldn't get into my house.
had lost
lost
was losing
They _________ (buy) a new car last weekend.
had bought
were buying
bought
The teacher _________ (explain) the lesson and then gave us some exercises.
explained
had explained
was explaining
We _________ (have) dinner when the lights went out.
had had
were having
had
While they _________ (play) football, it started to rain.
played
had played
were playing
