19.
That village tended to be impoverished settlements __________off from
civilization by the high mountain.
(A)cutting
(B)to cut
(C) cut
(D) to be cut
阿摩線上測驗:
http://www.yamol.tw/exam-TOEIC+%E6%96%87%E6%B3%95%E7%B7%B4%E7%BF%92%28650
800%297926-7926.htm#ixzz4MqYkgwhT
疑問：為甚麼是C
是被動態故選過去分詞 cut off?
能否有更淺顯或詳細的說明. 感恩~