完形填空。 Water costs money．In some places water is hard__1__．What__2__when a town has these problems？A small town in California found a happy__3__． Very __4__ rain ever fell there．The town had no water__5__．The water it used was __6__from a river 300 miles away．As more people__7__live in the town,__8__water was needed．Now water __9__to be brought in from 600 miles away．All these cost __10__money． The town __11__ a plan．It found__12__ to clean its “dirty” water．Once the cleaned water was reused__13__many ways．Five__14__lakes were built．Here people could swim and fish and go__15______．They __16__have picnics in their new parks．Farmers had more water __17__ their crops．New factories can be built，now that they have the promise of __18__． In most places，water is used and thrown__19__．The town that saved__20__water has saved the town！ (     )1.A．supplying (     )2.A．happens (     )3.A．key (     )4.A．little (     )5.A．of itself (     )6.A．fetch (     )7.A．come to (    )8.A．many (     )9.A．has (     )10.A．many (     )11.A．put (     )12.A．a way (     )13.A．for (     )14.A．man-making (     )15.A．boating (     )16.A．must (     )17.A．as (     )18.A．water enough (     )19.A．off (     )20.A．it’s B．getting B．happening B．answer B．a little B．of its own B．take B．came to B．plenty  of B．had B．a few B．made B．ways B．by B．man-make B．to boat B．could B．with B．enough water B．of B．its C．to get C is happened C answering C．few C．for its own C．brought in C．coming to C．more C．must C．a great many C．supply C．an answer C．at C．man-made C．to boating C．needed C．for C. crops enough C．away C．one’s D．to supply D．happened D．way D．a few D for itself D．guided D．came for D．many more D．needed D．a lot of D．noticed D．a key D．in D．man made D．on boating D．had to D．to D．enough crops D．out of D．his