There is Mr. Smith at the door who wants to speak to you.A. a someB. certainC. some aD.

发布时间：2020-08-16 14:50:18

There is      Mr. Smith at the door who wants to speak to you.
A. a some
B. certain
C. some a
D. a certain

网友回答

A. a some
B. certain
C. some a
(答案→)D. a certain
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