I _______ (can / not) open the door because I _______ (forget) my keys.
couldn't, had forgotten
She _______ (not / play) in the match because she _______ (break) her leg.
didn't play, had broken
She _______ (already / start) to eat by the time I _______ (arrive)
had already started, arrived
My computer _______ (break down) before I _______ (finish) my work.
had broken down, finished
Someone _______ (steal) all the cat food yesterday.
stole
She _______ (sleep) when the alarm clock _______ (go off).
was sleeping, went off
He _______ (ride) his bike when he ________ (fall off)
was riding, fell off
He _______ (drink) a lot of beer last night.
drank
