问题
选择题
That’s really a problem; no wonder all the students looked .
A．puzzled; puzzling
B．puzzled; puzzled
C．puzzling; puzzling
D．puzzling; puzzled
答案
答案：D
略
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That’s really a problem; no wonder all the students looked .
A．puzzled; puzzling
B．puzzled; puzzled
C．puzzling; puzzling
D．puzzling; puzzled
答案：D
略