－Who is the lady standing over there?－I am not sure, but it may be ___ from the provincial government. 

 —He has two brothers and three sisters. Do you know ________ of them? —No, I know ________ of them. 

I hope there are enough glasses for each guest to have ____-

. His attitude to us is _____ of a comrade.

It was hard for him to learn English in a family, in which _____ of the parents spoke the language.