13.He is not ______ to be the kind of man who could have done such a rude thing to a lady. You must have been mistaken.
There are too many difficulties for us __________. Wereally don't know __________ to do.
You'll find taxis waiting at the bus station __________ you can hire to reach your host family.
Thetest measures mathematical __________.
This piece of news was __________ economic and social problems.
Most staff are against the new rules, but they have come into being __________.