An important feature of consumer society is that we gain self-confidence through ______ we own.

      you may have , you should gather your courage to face the challenge .

Though the key was pressed, nothing ______ on the screen.

The great scientist became world-known in the early 1970s,______ he and another scientist made new discoveries about black holes.

______ made him unhappiest of all was ______ he had nowhere to unburden himself.