Now it is important that our drinking water ______ purified.A、should beB、isC、w

游客2023-10-05  29

问题 Now it is important that our drinking water ______ purified.

选项 A、should be
B、is
C、will be
D、was

答案 A

解析 现在已到了我们的饮用水需要净化的关键时刻了。在It is+adj.+that...结构中,如果形容词为important,necessary,desirable,advisable,surprising,essential,urgent,vital,possible,impossible等作表语时,从句要使用虚拟语气,即(should)+动词原形(do),should可以省略。
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