The professor explained this theory so clearly that this phenomenon was easy enough ________. A．for...
2022-12-31 05:48:51 200次 2013届山西省大同市高二下学期期中考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The professor explained this theory
so clearly that this phenomenon was easy enough ________.
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A．for us to work out
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B．working out
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C．for working out
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D．to working out
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本题链接：
