The teacher _________ (explain) the lesson and then gave us some exercises.
had explained
was explaining
explained
I _________ (read) when my phone rang.
was reading
read
had read
By the time she called, I _________ (already/go) to bed.
had already gone
already went
was already going
I _________ (finish) my homework before my mom got home.
had finished
finished
was finishing
We _________ (arrive) at the airport two hours ago.
had arrived
were arriving
arrived
I _________ (lose) my keys yesterday and couldn't get into my house.
lost
had lost
was losing
We _________ (have) dinner at a nice restaurant last night.
had had
had
were having
I _________ (see) that movie before, so I didn’t want to watch it again.
was seeing
had seen
saw
He _________ (forget) his umbrella at home this morning.
had forgotten
was forgetting
forgot
While they _________ (play) football, it started to rain.
were playing
had played
played
They _________ (buy) a new car last weekend.
had bought
bought
were buying
When he entered the room, everyone _________ (talk).
had talked
was talking
talked
While I _________ (walk) to school, I saw an old friend.
had walked
walked
was walking
She _________ (finish) her homework and then watched TV.
finished
had finished
was finishing
By the time we arrived, the movie _________ (start).
started
had started
was starting
We _________ (have) dinner when the lights went out.
had
had had
were having
She _________ (already/eat) dinner before we invited her.
already ate
was already eating
had already eaten
They _________ (leave) before we arrived.
left
had left
were leaving
He fell asleep while he _________ (watch) TV.
was watching
watched
had watched