题文
The question was so ________ that there was a ________ expression on the teacher's face.
| A．puzzled; puzzling | B．puzzled; puzzled |
| C．puzzling; puzzled | D．puzzling; puzzling |
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The question was so ________ that there was a ________ expression on the teacher's face.
| A．puzzled; puzzling | B．puzzled; puzzled |
| C．puzzling; puzzled | D．puzzling; puzzling |
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