Modal Verbs with Perfect Infinitive

I haven’t seen George for a long time. He must .... his workplace as he had once promised.

• have changed

• change

• be changing

Sue has refused to come to the party. She may ... for her maths exam

• be revising

• revise

• have been revising

• have revised

You ... be more responsible and hard-working, otherwise you’ll lose your job.

• should

• can

• might

I don’t understand how the accident has happened. The driver .... the pedestrian crossing the street.

• shouldn`t see

• can`t see

• must have seen

• can’t have seen

We planned to go abroad this summer but we didn’t. We .... , but some unforeseen circumstances prevented us from doing this.

• could have gone

• must have gone

• couldn`t have gone

• may go

Mabel is well-educated and has good manners. She can’t have behaved like that.

Identify the meaning of the modal verb

• supposition

• incredulity

• ctiticism

• ability

Where is Jane? — She .... the shopping and has forgotten about our meeting

• may be doing

• mustn`t do

• may have done

• couldn`t do