He stared at the empty bottle for a while, feeling happy that he had sent the butterfly back ________ it belonged-nature．

1. A.
   to which
2. B.
   that
3. C.
   which
4. D.
   to where

He stared at the empty bottle for a while, feeling happy that he had sent the butterfly back____ 　　　 it belonged—nature.

A. to which　　　　 B. that　　　　　　 C. which　　　　　　 D. to where

 He stared at the empty bottle for a while, feeling happy that he had sent the butterfly back ________ it belonged — nature.

A. to where                    B. that                         C. which    D. to which