So difficult __________ it to adapt to the academic requirements of a Western university that I dete_刷题宝

题干

So difficult __________ it to adapt to the academic requirements of a Western university that I determined to take a preparation course.

A：I have felt

B：have I felt

C：did I feel

D：I did feel

上一题下一题 0.0难度选择题更新时间:2014-03-16 08:32:14

答案(点此获取答案解析）

C

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