To improve the air quality of the city, it is _____ that all residents join hands to cut down air pollution by 20% in the next five years.
Aadaptable
Beccentric
Cimperative正確答案
Doutrageous
答案與詳解
imperative 意為「極為重要、勢在必行的」,常用於 It is imperative that S (should) V 句型,表達強烈必要性,完全符合本題改善空氣品質的迫切語氣。
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