1.ThereasonforTom'sfailureintheexamwas___hedidn'tworkhard.A.whyB.becauseC.whetherD.that2.-CanIhavesomemilkformycoffee?-I'mafraidthereis___left.A.nothingB.nooneC.noneD.neither3.-＄100,butthatismylastoffer.-____.A.Go

　　1.ThereasonforTom'sfailureintheexamwas___hedidn'tworkhard.

　　A.whyB.becauseC.whetherD.that

　　2.-CanIhavesomemilkformycoffee?

　　-I'mafraidthereis___left.

　　A.nothingB.nooneC.noneD.neither

　　3.-＄100,butthatismylastoffer.

　　-____.

　　A.Goodidea!B.Whatdidyousay?C.Oh,it'suptoyouD.Ok,it'sadeal.

　　以上三题的答案分别是D,C,D请给出详解（尤其是第二道中的那些noonenothingnone什么的最不清楚了,不知道该用哪些）（还有第三道翻译下）,