--As for Mr Brown do you know?Sure. Canada. But he has been teaching French for two ye

问题补充：

--As for Mr Brown, do you know?

--Sure. Canada. But he has been teaching French for two years in Shanghai.

A. where he is working B. where he comes from C. where is his motherland

答案：

解析：考查宾语从句的用法。宾语从句要使用陈述语序，先排除C；根据答语，他目前在上海工作，A项的显然合题意，也就是说，他来自Canada。故选B。