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

网友回答

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。