I need something for cutting the paper.Oh,you want a knife?Ok,l'll get ______ for you.
I need something for cutting the paper.
Oh,you want a knife?Ok,l'll get ______ for you.
A.it
B.that
C.this
D.one
it 强调前面提到过的东西,前面不是出现过刀了吗（you want a knife）