in thE thirD pArAgrAph, thE phrAsE "go Down thE DrAin" proBABly mEAns _______.
A．lost in A wAstEFul wAy
B．DrAw oFF grADuAlly
C．Drink All thE liquiD From thE Cup
D．rECEivE thE wAtErs oF A lAkE