Choose the option that best completes the gap(s) _________ is expanding rapidly.

Analyze the question: The gap is the subject of the sentence "___ is expanding rapidly." We need the option that is grammatically correct and idiomatic.

Concept: When we name a specific, unique place using the structure "city of + name," we use the definite article "the". Abuja is one particular city, so it is definite. The pattern is "the city of Lagos," "the state of Osun," "the Republic of Nigeria."

Step-by-step:

• A. A city of Abuja: The indefinite article "a" suggests any one of many cities, but Abuja is one specific city. Wrong.
• B. The city of Abuja: Uses the definite article for a specific, known city. The singular verb "is" agrees with the singular subject. Correct.
• C. City of Abuja: The article is missing. A singular countable noun like "city" needs a determiner here. Wrong.
• D. Abuja of a city: The word order is reversed and meaningless. Wrong.

Complete sentence: The city of Abuja is expanding rapidly.

Exam tip: In "city/state/republic of + name" phrases, use "the" at the start. Quickly eliminate options with a missing article or scrambled word order, since JAMB often tests these.