The woods and the newly?dug river through the campus

________ the beauty of this world?known university.

A．add up 　　　　　　 B．add to

C．are added up 　　　 D．are added to

The woods and the newly dug river through the campus ________ the beauty of this world-known university．

1. A.
   add up
2. B.
   add to
3. C.
   are added up
4. D.
   are added to

 The woods and the newly dug river through the campus _________the beauty of this world—known university.

A. add to    B. add up    C. are added up    D. are added to

The woods and the newly dug river through the campus ______ the beauty of this world-known university.

A. add up              B. add to          C. are added up       D. are added to

The woods and the newly dug river through the campus         the beauty of this world--known university                                        

A. add up    B. add to       C. are added up     D. are added to