6、edsof,todoC.twohundreds,doD.hundredsof,do5.Heonlysaiditfor,hedidn’treallymeanit.A.joyB.funC.jokeD.thank6. You ______ better if you ______ harder. A. learn, work B. are learning, are workingC. will learn, workD. learn, will work7.Therewillbe_________pollutionthisyearthanlastyear.A.fewer B.mu