This Russian program is difficult ______ for Chinese students. A. understanding it B. understanding ...
2022-10-08 23:03:16 197次 2016-2017学年内蒙古高二上期第二次月考英语卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
This Russian program is difficult ______ for Chinese students.
A. understanding it B. understanding
C. to be understood D. to understand
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