说明理由1.ItwillbesadnottoseeyouduringtheChristmasholiday______familiesgettogether.A.beforeB.whenC.thatD.since2.Anewstudyshowsangermayhelppeoplereducethenegativeimpacts______stressandhelpyoubecomehealthier.A.i

　　说明理由

　　1.ItwillbesadnottoseeyouduringtheChristmasholiday______familiesgettogether.

　　A.beforeB.whenC.thatD.since

　　2.Anewstudyshowsangermayhelppeoplereducethenegativeimpacts______stressandhelpyoubecomehealthier.

　　A.inB.ofC.onD.at

　　3.-Doyoulikethispartofthetown,theso-calleddesiredarea?

　　-Onthecontrary,it'sthe______areathatIwanttovisitintown.

　　A.bestB.firstC.lastD.least