For holidays, many people visit the Great Barrier Reef _____ the northeast coast of Australia, which has 700 islands. 

   A. on            B. in        C. to             D. off    

For holidays, many people visit the Great Barrier Reef _______ the northeast coast of Australia, _______ has more than 600 islands.

  A. on, which      B. on, that             C. off, which       D. off, that

For holidays, many people visit the Great Barrier Reef _____ the northeast coast of Australia, which has 700 islands.

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

For holidays, many people visit the Great Barrier Reef ________ the northeast coast of Australia．

1. A.
   beyond
2. B.
   on
3. C.
   within
4. D.
   off