6、:25B.8:15C.9:15()17.A.swimB.workC.play()18.A.playbasketballB.havelunchC.playfootball()19.A.abananaB.anappleC.ahamburger()20.A.2:30B.4:30C.3:30二、单项选择(15个小题,共15分)()21.They are in different _________. A. class B. school C. classes.D.grade()22.There__________apenandtwop