This is the only way that I can think of the problem of water waste in urban areas.
A. settling
B. to settle
C. settle
D. settled
网友回答
A. settling
(答案→)B. to settle
C. settle
D. settled
解析：考查不定式做定语：句意：这是我能想到的唯一的解决都市地区水浪费的问题的方法。这里that I can think of是定语从句，所以横线部分是定语，修饰the way，the way to do sth/of doing sth“做…的方法”，选B。