We have finished the project finally . No one can imagine the difficulty we had _____the problem,A.t

题目简介

We have finished the project finally . No one can imagine the difficulty we had _____the problem,A.t

题目详情

We have finished the project finally . No one can imagine the difficulty we had _____the problem,
A.to solveB.solvedC.solvingD.solve
题型:单选题难度:偏易来源:不详

答案

C

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