While I _________ (walk) to school, I saw an old friend.
had walked
walked
was walking
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.
were never
had never been
never were
I _________ (finish) my homework before my mom got home.
finished
was finishing
had finished
When he entered the room, everyone _________ (talk).
was talking
had talked
talked
I _________ (read) when my phone rang.
was reading
had read
read
They _________ (leave) before we arrived.
were leaving
left
had left
We _________ (arrive) at the airport two hours ago.
were arriving
had arrived
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.
lost
was losing
had lost
They _________ (buy) a new car last weekend.
had bought
were buying
bought
The teacher _________ (explain) the lesson and then gave us some exercises.
explained
was explaining
had explained
We _________ (have) dinner when the lights went out.
had
had had
were having
While they _________ (play) football, it started to rain.
had played
played
were playing
