1.A.recycle B.sky C.why D.century
2.A.resources B.beaches C.lakes D.oranges
3.A.meal B.ahead C.reading D.please
4.A.favor B.glad C.bank D.happy
5.A.worked B.played C.studied D.lived
6.A.safe B.nature C.mall D.face
7.A.proud B.resource C.scout D.sound
8.A.cheap B.match C.chore D.machine