The farm as well as its neighbouring hills we once spent so much time _____ on a new look as recently as last year.   

A. on has taken    B. has taken    C. on having taken    D. having taken

The farm as well as its neighbouring hills we once spent so much time _____ on a new look as recently as last year

1. A.
   on has taken
2. B.
   has taken
3. C.
   on having taken
4. D.
   having taken

（2010·湖南衡阳八中高三上第二次月考）    28.  The farm as well as its neighbouring hills we once spent so much time _____ on a new look as recently as last year. 

A. on has taken         B. has taken   

C. on having taken    D. having taken