In "… and all my knowledge of him was limited to occasional meetings about the house,"(the second paragraph), the word about means ______.

A．busy.
B．sociable.
C．friendly.
D．changeable.

A．Changes are slowly taking place in all sectors of the British society.
B．The gap between working-class and middle-class young people is narrowing.
C．Differences in income will remain but those in occupation will disappear.
D．Middle-class people may sometimes feel inferior to working-class people.