—I can’t find Mr. Smith. Where did you meet him this morning?—It was in the hall our prod

问题补充：

—I can’t find Mr. Smith. Where did you meet him this morning?

—It was in the hall our products were showed..

A. that

B. which

C. the one

D. where

答案：

A. that

B. which

C. the one

(答案→)D. where

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