44．A．are doing             B．will do                C．do                         D．have done

43．A．While                  B．As soon as             C．Before                   D．Since

42．A．full                     B．empty                  C．filled                     D．clean

41．A．work                    B．basket                  C．well                    D．water

40．A．picked up            B．put away               C．took away              D．throw down

39．A．everything             B．something             C．nothing                  D．anything

38．A．A second             B．Another               C．One                       D．The other

37．A．ever                    B．never                   C．easily                     D．no