Portable, affordable, and stylish: personal listening devices have never been a more popular______.
A.area
B.gift
C.show
D.music

A.A.area
B.gift
C.show

【参考答案】

B
解析：从上下文我们可以看出be动词后面有名词表语，那它就应该与主语构成同格关系。四个选项中只有pemonal......

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