93. The diligent student refused the help of others and insisted on working out the difficult maths

题目简介

93. The diligent student refused the help of others and insisted on working out the difficult maths

题目详情


93. The diligent student refused the help of others and insisted on working out the difficult maths problem _____.
A.on his ownB.in his ownC.of his ownD.for his own
题型:单选题难度:偏易来源:不详

答案

A

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