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—Could I use your computer, Susan?
—Sorry, I’m going to _______ it now. You can use it tomorrow.
A.work outB.work inC.work onD.work for
C

A. work out 表示算出;解決。B. work in在哪工作C. work on致力于;從事于;利用......做事。D. work for為......工作。故答案為:C
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