【单选题】 Mr. Hall understands that ______ math has always been easy for him, it is not easy for the students.
- A. unless
- B. since
- C. although
- D. when
网考网参考答案：C
网考网解析：
[考点] 让步状语从句 [解析] although“尽管”。 查看试题解析出处>>
【单选题】 Mr. Hall understands that ______ math has always been easy for him, it is not easy for the students.
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