(No) Obligation
Prohibition
Possibility
Deduction
Spot the mistake
100
Which modal verbs do we use to express obligation? And no obligation?
Must and have to / Don't 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
Which modal verbs do we use when we aren't sure about something? And when we are sure?
might not - could - might can't - must
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 late on weekends.

can

200
They are on a trip to England. Their house ____ be empty.
must
200
You don't had behave in class yesterday.
You didn't have to behave in class yesterday.
300
She _____ answer all the call phones at work yesterday.
had to
300
Students _____ late to school some years ago. (arrive)
mustn't be
300

(-) You _____ shout in class tomorrow! We are taking an exam.

can´t

300
I ____ go to the cinema this afternoon. I don't know yet.
might / could
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
Put the words in the correct order: can't / exam / studied / this / a lot! / be / his / he
This can't be his exam. He studied a lot!
400
Parents can't to let their children miss school last week.
Parents couldn't let their children miss school last week.
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