There was a________look on his face when he met with the________problem.A.confusing；confusingB.confused；confusedC.confusing；confusedD.confused；confusing
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D解析考查形容词。Confused通常用来形容人，或者与人有关的事物；confusing通常形容事物。本题的look是与人有关的事物，所以仍然使用confused。第二空修饰problem，所以使用confusing.