We have finished the project finally . No one can imagine the difficulty we had _____the problem, A....
2023-01-27 05:28:27 35次 2010年江苏省高一下学期期中考试英语 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
We have finished the project finally . No one can imagine the
difficulty we had _____the problem,
A.
to solve B.
solved C.
solving D.
solve
本题链接：
