--Where did you our chemistry teacher?--It was in the supermarket I saw him.A. c

问题补充：

----- Where did you our chemistry teacher?

----- It was in the supermarket I saw him.

A. come to, where

B. come across, that

C. come across, where

D. come to, that

答案：

A. come to, where

(答案→)B. come across, that

C. come across, where

D. come to, that

解析：第一空考查短语辨析，come to 达到，come across 偶然遇见，第二空考查强调句型，强调的是地点状语in the supermarket，that 为强调句型的标志。句意：你在哪偶然遇见了我们的化学老师？就是在超市我遇见了他。所以选B。