Miscellaneous Impersonal Constructions.
Is it possible that he is married?
It is necessary to buy a ticket of admission.
It is right that he should be praised.
How fortunate it was that the doctor was at home!
It is a pity I did not know this earlier.
What a good thing it is that you knew just where to find the letter!
It would not be fair to leave him out of the team.
It is a nuisance (= very troublesome) to have to walk all the way.
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