Fill in the blank with the suitable article: Kolkata is ___ capital city of…

Correct answer: the (first blank) and no article (second blank).

Explanation:

• Use "the" before a unique or specific noun: "the capital city" refers to the one official capital of a state.

• Do not use an article before the names of most states and provinces: say "West Bengal," not "the West Bengal."

• Put together: "Kolkata is the capital city of West Bengal."

Note: Some country names take "the" (for example, "the United States" or "the Netherlands"), but this does not affect the rule for state names like West Bengal.