From his look , we could see that he hadn’t expected that we could raise such questions to

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A. confusing; confusing
B. confused; confused
C. confusing; confused
(答案→)D. confused; confusing
解析：考查形容词用法。Confused感到困惑的（形容人）；confusing令人困惑的（形容事物）；在形容一些与人有关的事物的时候也用过去分词来形容，如look，expression等。句意：从他困惑的表情，我们可以发现他没有预料到我们会向他提出如此令人困惑的问题。故D正确。