It has to be a place we can do lots of exercise.A. thatB. whenC. whichD. where

问题补充：

It has to be a place we can do lots of exercise.

A. that

B. when

C. which

D. where

答案：

A. that

B. when

C. which

(答案→)D. where

解析：根据本句的结构可知本句是一个定语从句，而定语从句的引导词取决于先行词，本句的先行词是place，应该用where来引导。所以本题选D。