That’s really a problem; no wonder all the students looked .A. puzzled; puzzling B. puzzle

发布时间：2020-08-16 18:31:43

That’s really a      problem; no wonder all the students looked     .
A. puzzled; puzzling
B. puzzled; puzzled
C. puzzling; puzzling
D. puzzling; puzzled

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