44．A．bus station           B．countryside          C．train station            D．airport

43．A．increasing            B．passing                C．keeping                  D．reducing

42．A．proper                 B．expensive             C．comfortable            D．necessary

41．A．quiet                   B．in town                C．warm                     D．far away

40．A．take trains            B．drive cars             C．ride bikes               D．take taxis