how woulD FrEsh wAtEr BE suppliED to thE City
A．By trEAting sEA wAtEr.
B．By gEtting it From thE surrounDing islAnDs.
C．By BuilDing A smAll lAkE oF FrEsh wAtEr insiDE thE City.
D．By trAnsporting it From thE mAinlAnD.