6、rD.higher;farther15. he Iamabletoswim,butsheis.A.Both;andB.Neither;norC.Either;orD.Notonly;butalso16.Lucyisshy.Shewouldnotinviteherclassmates dancingwithher.A.practiceB.practicesC.practicingD.topractice17.---Marywasheard justnow.Whathappened?---Johnwastellingajoke.A.cryB.tocryC.laug