Is this the factory he worked ten years ago?A. thatB. whereC. whichD. the one

问题补充：

Is this the factory he worked ten years ago?

A. that

B. where

C. which

D. the one

答案：

A. that

B. where

C. which

D. the one

解析：先行词“the factory”在句中充当地点状语，即“he worked in the factory ten years ago”，所以关系词选where毋庸置疑。