【導(dǎo)讀】7.--------Look,it______beLaoWang.A.may,mustn’tB.must,maynotC.must,can’tD.can,maynot. 8.Look,whatyouhavedone!inhisstudy.me.17.----MayIsmokehere?18.----IsJackondutytoday?----It_____behim.It’shisturntomorrow.----Yes,you______.-------__________.decision.