There is hardly an environment on earth ______ some species of animal or other have not adapted successfully.

There is hardly an environment on earth ______ some species of animal or other have not adapted successfully.

A．to which          B．in which           C．for which          D．on which

There is hardly an environment on earth ______ some species of animal or other have not adapted successfully.

　　 A. to which　　　 B. in which　　　　 C. for which　 D. on which

There is hardly an environment on earth ______ some species of animal or other have not adapted successfully.

　　 A. to which　　　 B. in which　　　　 C. for which　 D. on which

There is hardly an environment on earth ________ some species of animal or other have not adapted successfully．

1. A.
   to which
2. B.
   in which
3. C.
   for which
4. D.
   on which

There is hardly an environment on earth       some species of animal or other have not adapted successfully.

       A．in which              B．on which             C．to which             D．for which

There is hardly an environment on earth       some species of animal or other have not

adapted successfully.

A．in which            B．on which          C．to which          D．for which

There is hardly an environment on earth _______some species of animal or other have not adapted successfully.

A．to which                 B．in which                 C．for which               D．on which