问题
选择题
(2013·江西六所重点高中一模)We ________ take clean drinking water for granted. One day we may run out of it.
A．needn't
B．can't
C．won't
D．shouldn't
答案
答案：D
选D 考查情态动词。句意：我们不应该把拥有洁净的饮用水看作是理所当然的。也许有一天，我们会用完它。shouldn't“不应该”，符合句意。