Modal Verbs of Possibility & Obligation 1

Jack did not go to bed early because he ... his assignment instead of going to bed.

• had to complete

• wasn't allowed to complete

• must have completed

• might have completed

• should have completed

We ... our concert tickets two months in before we went to the concert because our idols are so popular that the concert tickets sold out quickly.

• should buy

• must have bought

• had to buy

• could buy

• might buy

You ... with scissors! It's dangerous!

• should run

• mustn't run

• might not run

• could not run

• must not have run

Yesterday was a public holiday, so we ... to school.

• hadn't to go

• didn't have to go

• mustn't have gone

• couldn't go

• couldn't have gone

You ... English in our classroom.

• have to speak

• must speak

• might speak

• can speak

• could speak

You ... scared of my pet snake because he's gentle and friendly.

• couldn't be

• don't have to be

• might not be

• can't be

• might not be

I know I ... my writing assignment tonight, but I prefer to go to the movies instead.

• should finish

• must have finished

• might finish

• may have finished

• can finish

You ... this medicine every morning before breakfast or you won't get better.

• must take

• could take

• may take

• might have taken

• may have taken

She ... her homework tonight because the teacher won't check it until next Monday.

• mustn't do

• doesn't have to do

• might not have done

• may not do

• couldn't have done

Lily purposely arrived an hour early for the train, so she ... stressed or worried about missing the train.

• couldn't feel

• mustn't feel

• didn't have to feel

• cannot feel

• may not have felt