As a matter of fact , this sofa is now an antique which served a bed in the past .A. asB.

发布时间：2020-08-16 14:44:44

As a matter of fact , this sofa is now an antique which served      a bed in the past .
A. as
B. for
C. to
D. with

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(答案→)A. as
B. for
C. to
D. with
解析：考查词组;serve as担当，充当，句意是;事实上，这个过去充当床的沙发现在是古董。选A。
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