有关介词的4道选择题Mysisterusuallythinks()herownlanguagefirst.ThensheturnsherwordsintoEnglish.A.byB.inC.withD.through错解：C正解：BMaryisflyingtoFrancesoon.Shewillarrive()Paris()themorningofJuly9.A.at;inB

　　有关介词的4道选择题

　　Mysisterusuallythinks()herownlanguagefirst.ThensheturnsherwordsintoEnglish.

　　A.byB.inC.withD.through

　　错解：C正解：B

　　MaryisflyingtoFrancesoon.Shewillarrive()Paris()themorningofJuly9.

　　A.at;inB.in;onC.in;inD.at;on

　　错解：D正解:B

　　--Ihearyou'vegotaticket()theOpeningCeremonyoftheBeijingOlympics.

　　--Yes,Igotit()myuncle.

　　A.of;fromB.to;byC.for;fromD.for;to

　　Oh,it'syou,Ella!Yourvoicesoundsverydifferent()thephone.What'shappening?

　　A.fromB.inC.ofD.on

　　错解:A正解：D

　　以上四道选择题我都知道正确答案,但是我就是想不明白为什么错,实际就是忘记这四道题目的语法,希望大家能帮帮忙讲解下（最好是语法讲解）