Many experts hold the view _______ protection awareness is _______ the key to be

题干

Many experts hold the view _______ protection awareness is _______ the key to better environment lies.

A．that; where

B．which; in which

C．which; where

D．that; in which

上一题下一题 0.85难度单项选择更新时间:2010-09-29 11:28:08

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