从所给的四个选项中选择最佳答案 This maths problem is easy . [ ] A.to work out B.to be worked ou
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从所给的四个选项中选择最佳答案
This maths problem is easy _____.
[]
A.to work out B.to be worked out
C.work outD.for us to be worked out
试题答案
答案:A