itisre的精选

问题详情：IenjoyfreshairsoIalwayssleepwiththewindowopen    itisreallycold.  A.unless           B.when               C.if                  D.since【回答...

问题详情：---HavethestudentsinYushureturnedtoschoolyet？ ---ItisreportedonTVthat        .A.   theweatherisbecomingbetter         B.mostofthefactoriesweredestroyed Cpeoplehavegivenlot...