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

问题补充：

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

A. on having taken

B. has taken

C. on has taken

D. having taken

答案：

A. on having taken

B. has taken

C. on has taken

D. having taken

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