—Did you meet the pianist at the station?—No,he__________by the time I__________there.
He is so addicted to smoking that __________ seems to be no chance of talking him into quitting.
The Roman Empire __________ for several centuries.
-How long has the United Nations __________? -__________1945.
It seems __________ the poor guy is going to die of __________.
We saw a __________ big snake in the grass yesterday, which __________ all of us to death.