Not until quite recently       paid work outside the home.

A．most mothers in Britain took                        B．did most mothers in Britain take

C．took most mothers in Britain                        D．were most mothers in Britain taken

____quite recently, most mothers in Britain did not take paid work outside the home．

____quite recently, most mothers in Britain did not take paid work outside the home．

       A．Before     B．Until               C．From           D．Since

____quite recently, most mothers in Britain did not take paid work outside the home．

A．Before                   B．Until         C．From             D．Since