Is this the factory you visited last year?A. the oneB. whereC. thatD. which

问题补充：

Is this the factory you visited last year?

A. the one

B. where

C. that

D. which

答案：

(答案→)A. the one

B. where

C. that

D. which

解析：

this如是主语，factory前要有定冠词，这样可选C、D。但这里是the factory，所以只能选A。