In . . . . . . . . past, . . . . . . . . air pollution was generally considered basically . . . . . . . . urban phenomenon.
A. the, no article, no article
B. the, no article, an
C. no article, no article, no article
D. the, no article, the
Answer: Option B
Solution(By Examveda Team)
The first blank shall take 'the' as the sentence talks about a specific time. The second blank won't take any article as 'air pollution' is uncountable. The third blank shall take 'an' as the following phrase 'urban phenomenon' is a singular countable noun and starts with the vowel 'u'.This Question Belongs to Competitive English >> Articles
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