Thefarmaswellasitsneighboringhillsweoncespentsomuchtime...

問題詳情：

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

【回答】

C

知識點：定語從句

題型：選擇題