Is this the factory __________ you visited the other day?

A. that 　　　 B. where 　　　 C. in which 　　　　D. the one

Is this the factory _______ you visited the other day?
A. the one      B. that     C. where      D. when

Is this factory _____ you visited the other day？

1. A.
   the one
2. B.
   that
3. C.
   where
4. D.
   when

Is this factory _____ you visited the other day？ 

A. the one   B. that   C. where   D. when