Obligation
Prohibition
Possibility
Spot the mistake
100

Which modal verbs do we use to express obligation?

Must and have to 

100
Which modal verb do we use to express prohibition?
Mustn't
100
Which modal verbs express ability and possibility?
can - could
100
Carol must finishes her homework for tomorrow.
Carol must finish her homework for tomorrow.
200
You _____ take your password when you travel abroad
must
200

I _____ go alone tonight.

mustn't

200

(+) We _____ get up early on weekends if we make a commitment.

can

200

You don't had to behave like that in class yesterday.

You didn't have to behave like that in class yesterday.

300
She _____ answer all the call phones at work yesterday.
had to
300

Students _____ late to school. (arrive)

mustn't arrive

300

(-) You _____ be right! I always know the answers.

cannot

300
Do she have to play the guitar at the concert?
Does she have to play the guitar at the concert?
400
Put the words in the correct order: be / I / on / time / must
I must be on time
400

Put the words in the correct order: you / if / mustn't / eighteen / are / drive / under / you

You mustn't drive if you are under eighteen.

400

Put the words in the correct order: he / to / uniform / went / could / school / he / choose / when / not / wear / a / to / ?

Could he choose not to wear a uniform when he went to school?

400
Parents can't to let their children miss school last week.
Parents couldn't let their children miss school last week.
500

How do you use "must" in a past tense?

"had to"

500

Write a sentence using the modal verb "must" in negative.

Open answer.

500

Write a sentence using the modal verb can and another sentence using the modal verb could.

Open answer.

500

Do doctors should help people if they need it? Yes, they do.

Should doctors help people if they need it? Yes, they should.

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