-1-Unit2SportsandFitnessUnit2SportsandFitnessPart6Part6AssessmentofUnit2AssessmentofUnit2必备知识基础练进阶训练第一层Ⅰ.单词拼写1．Ifthewindowsareshut,aircan't________(流动)freelythroughthebuilding.2．Thescho...