问题补充：
From his look, I knew that the questions during the interview were .
A. puzzling; puzzled
B. puzzled; puzzling
C. puzzling; puzzling
D. puzzled; puzzled
答案：
A. puzzling; puzzled
(答案→)B. puzzled; puzzling
C. puzzling; puzzling
D. puzzled; puzzled
解析：考查形容词用法。过去分词转换的形容词常常修饰人或者与人有关的事物，现在分词转换的形容词常常修饰事物。句意：从他困惑的表情，我知道面试中的这个问题很让人困惑。第一空的look虽然不是人，但是他是与人有关的，故使用puzzled修饰。故B正确。
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