4、games.A.both;orB.either;orC.either;andD.both;and13.---Whydon'tyoujoinusforbreakfast?---Sure! A.Goodluck!B.Congratulations!C.Whattodo?D.Whynot?14.Doingexercise goodforyourhealth.A.beB.amC.isD.are15. Mike hishomeworkintheevening?A.Do;doB.Do;doesC.Does;doD.