When he was asked suddenly about the matter ,he couldn’t_____an answer at once.
To look after my pets properly takes a lot of time but I find it _____.
I’m not a little tired today after giving the room a thorough cleaning and I have never had ____ today.
Tom wants to know if we can ____ John for the night, since he has lost all his money and can go nowhere.
The study showed a deep fear among the old people of _____ to the care of strangers.
It was not yet dawn ______ the boy got to the school.