24.The students were over the problem, listening to the teacher with a expression on th

发布时间：2020-08-16 07:37:02


24.The students were      over the      problem, listening to the teacher with a      expression on their faces.
A. puzzled; puzzling; puzzling
B. puzzled; puzzling; puzzled
C. puzzling; puzzling; puzzled
D. puzzling; puzzled; puzzling

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A. puzzled; puzzling; puzzling
(答案→)B. puzzled; puzzling; puzzled
C. puzzling; puzzling; puzzled
D. puzzling; puzzled; puzzling
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