I ____ (wash) my clothes yesterday.
washed
She couldn't ____ (drive) because she had ____ (lose) her keys.
drive, lost
We ____ (not/use) the computer last night.
didn't / did not use
What do you use to express certainty, ability, willingness, necessity, permission, obligation, advice, and possibility?
Modal verbs
Penguins (must/can) swim very well.
can
They ____ (meet) her in 2008.
MET
When we ____ (arrive) at the theatre, the movie had already ____ (start).
arrived, started
By the time you ____ (call) me, I had already ____ (go) to bed.
called, gone
Peter (not/must/can) speak Spanish.
can't / can not
He has a broken leg, so he (not/could/can) walk for a few days
can't / can not
He ____ (not/drink) any beer last night.
didn't / did not drink
By the time I ____ (move) into my own apartment, I had ____ (finish) high school.
moved, finished
By 2010, the business ____ (make) over 10 million dollars.
had made
You (can/must) listen to your teacher.
must
You (not/must/do have to) be young to dance.
don't have to
She ____ (wake) up and ____ (brush) her teeth.
woke, brushed
She told me she ____ (study) a lot before the exam.
had studied
I ___ (sleep) in my car last night because my wife ___ (lock) the front door.
slept, had locked
People (not/should/could) waste food.
shouldn't / should not
You (not/should/shall) drive too fast.
shouldn't / should not
We ____ (go) to the store. Then, we ____ (buy) oranges.
went, bought
The lights ____ (go) off because we ____ (not/pay) the electricity bill.
went, had not paid
When I ___ (go) home, my girlfriend had already ___ (fall) asleep.
got, fallen
TRUE OR FALSE
All modal verbs are auxiliaries, but not all auxiliaries are modal verbs
TRUE
They haven't eaten for hours- they ____ be starving.
must