In societies where social roles are determined, boys usually copy the behavior of their fathers, and girls usually also copy _____ of their mothers.

– It is said that Frank is very rich and is always changing his private cars .What is he?–_______ of a manager, I am not sure.

New technologies have made ______ possible to turn out new products faster and at a lower cost.

The telegram has faded out in our life now, and gone with____ are telegraph operators.

 — It is a pity that we have nothing to refer to when we come across new words.— I quite agree with you. There isn't any dictionary around when we need ______.