Thanks to the measures ______ by the local government , the polluted river is being clearer and clearer and fish have begun to show up in it.
A.taking
B.taken
C.to take
D.having taken
网友回答
B解析考查非谓语动词。句意：多亏了被当地政府才去的措施，被污染的河流变得越来越清澈，鱼开始在里面出面。根据语境是措施被当地政府采取，所以用过去分词taken，选B。