Our bad living habits will destroy the earth. Only by changing       we live can we save the earth．

1. A.
   that
2. B.
   what
3. C.
   how
4. D.
   where

Our bad living habits will destroy the earth. Only by changing ____ we live can we save the earth.

       A. that    B. what   C. how    D. Where

Our bad living habits will destroy the earth. Only by changing           we live can we save the earth.

A．how         B．what          C．which         D．that

Our bad living habits will destroy the earth. Only by changing ________we live can we save the earth.

A. that                     B. what          C. how                D. where

Our bad living habits will destroy the earth. Only by changing _______ we live can we save the earth.

A. that         B. what                                   C. how                D. where

 Our bad living habits will destroy the earth. Only by changing _____ we live can we save the earth.

       A. that                        B. what                        C. how                         D. where

Our bad living habits will destroy the earth.Only by changing        we live can we save the

earth．

A.that                    B.what                  C.how                          D.where

Our bad living habits will destroy the earth. Only by changing     we live can we save the earth.

   A. that              B. what                 C. how                D. where 

Our bad living habits will destroy the earth. Only by changing ____ we live can we save the earth.