The farm as well as its neighboring hills we once spent so much time ___ a new look recently.

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

The farm as well as its neighboring hills we once spent so much time ___ a new look recently.

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

The farm as well as its neighboring hills we once spent so much time ___ a new look recently.

The farm as well as its neighboring hills we once spent so much time        on a new look as recently as this year .

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

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