You _________________ (be ) ill yesterday. Aussie told me he had seen you playing bowling at the mall.
can't have been
Jackie looked happy. She __________________ (pass) her driving test.
must have passed
Scientists are not sure but they believe that some living organisms _________________ (exist) on Mars 20.000 years ago.
may have existed / might have existed
I don't know where they went but they ________________ (go) to Russia. They were looking for somewhere cold for holiday.
might have gone
The window was broken. Somebody _________________ (break) into their house yesterday.
must have broken
Look how badly you have failed. You _________________ (study) enough for your test.
can't have studied
His car isn't here. He _______________ (leave) the city already.
must have left
You have gained a lot of weight. You _________________ (eat) too much junk food.
must have eaten
The bystanders are not sure but they said the cyclist who stole the lady's phone _________________ (ride) to downtown.
might have ridden
The boss is in a terrible mood. The meeting _________________ (be) good.
can't have been
I waited for a bus for 45 minutes yesterday. There _________________ (be) an accident or a strike.
may have been / might have been
Andrew did no revision nor he came to school, but still passed the test. He _________________ (cheat).
may have cheated / might have cheated
I didn't see you at the concert. You _________________ (gone)
can't have gone
