1£®As Susan stared at ______ piles of plastic in her recycling bin, ______ strong sense of responsibility made her stick to her recycling work£®

       A£®²»Ì²»Ìî      B£®²»Ìa          C£®the; a            D£®the; the

2£®When electric cars become _____, we'll need to build more charging stations£®

       A£®available         B£®useless             C£®different       D£®famous