In order to improve English listening, .A. he bought a WalkmanB. his father bought him a

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(答案→)A. he bought a Walkman
B. his father bought him a Walkman
C. a Walkman was bought by him
D. a Walkman was offered to him
解析：考查非谓语动词。improve English listening的逻辑主语和后面句子的主语必须一致。