When I stayed at Aunt Liu's, she would tell me about the great changes which ________ in the village．

1. A.
   have taken place
2. B.
   had taken place
3. C.
   took place
4. D.
   would take place

 When I stayed at Aunt Liu's, she would tell me about the great changes which___________ in the village.

A. have taken place             B. had taken place

C. took place                     D. would take place

 When I stayed at Aunt Liu's, she would tell me about the great changes which___________ in the village.?

A. have taken place             B. had taken place?

C. took place                   D. would take place