---- Who is it that is making so much noise upstairs?
---- ______ the students preparing for the New Year’s Party.A.There areB.They areC.It isD.That is
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C解析考查强调句型。It is the students preparing for the New Year’s Party.后面省略了who are making so much noise.句意： —到底是谁在楼上弄出怎么大的噪音？—是为元旦晚会做准备的学生。