If water bees increasingly scarce in decades , water shortage will bee a hot issue all over the world.
A. ing
B. having e
C. to e
D. to be ing
网友回答
A. ing
B. having e
(答案→)C. to e
D. to be ing
解析:选C 考查非谓语动词。句意:如果在未来的几十年当中,水变得越来越紧缺,那么用水短缺将成为全世界的热点问题。此处是指未来的几十年,故应用不定式to e作后置定语,表将来,修饰名词decades。