A.I. Explanation:

Correct answer: stopped

Explanation: The word 'stopped' is the past tense of the verb 'stop,' which fits grammatically in the sentence as it describes an action that occurred five years after the commencement of construction. The context indicates that construction was interrupted due to war, making 'stopped' the appropriate choice.

Meaning: 'Stopped' means to cease or bring to an end, indicating that construction was halted.

Wrong options:

• began: The word 'began' is the past tense of 'begin,' which does not fit the context as it suggests the start of construction rather than its cessation.
• area: The word 'area' is a noun that refers to a space or region, which does not fit grammatically or contextually in this sentence about construction halting.
• construction: The word 'construction' is a noun and does not fit as a verb in this context, where an action is needed to indicate the cessation of work.
• ground: The word 'ground' is a noun that refers to the surface of the earth, which does not fit the context of stopping construction.
• population: The word 'population' is a noun that refers to the inhabitants of a place, which does not fit as a verb in this context.
• war: The word 'war' is a noun that refers to conflict, which does not fit as a verb to indicate the action of stopping construction.

Correct answer: second

Explanation: The word 'second' is an ordinal number that indicates the position of the floor in a sequence. It fits grammatically and contextually as it describes the specific floor reached in the construction of the Tower.

Meaning: 'Second' refers to the number two in a sequence, indicating the floor level reached during construction.

Wrong options:

• area: The word 'area' is a noun that refers to a space or region, which does not fit as it does not indicate a floor level.
• began: The word 'began' is the past tense of 'begin,' which does not fit as it does not describe a floor level.
• construction: The word 'construction' is a noun that refers to the act of building, which does not fit as it does not indicate a specific floor.
• ground: The word 'ground' is a noun that refers to the surface of the earth, which does not fit as it does not indicate a floor level.
• population: The word 'population' is a noun that refers to the inhabitants of a place, which does not fit as it does not indicate a floor level.
• war: The word 'war' is a noun that refers to conflict, which does not fit as it does not indicate a floor level.

Correct answer: construction

Explanation: The word 'construction' is a noun that refers to the act of building, which fits grammatically as the subject of the sentence. The context indicates that the building process resumed after a long break, making 'construction' the appropriate choice.

Meaning: 'Construction' refers to the process of building something, in this case, the Tower.

Wrong options:

• area: The word 'area' is a noun that refers to a space or region, which does not fit as it does not indicate the act of building.
• began: The word 'began' is the past tense of 'begin,' which does not fit as it does not serve as a noun in this context.
• ground: The word 'ground' is a noun that refers to the surface of the earth, which does not fit as it does not indicate the act of building.
• population: The word 'population' is a noun that refers to the inhabitants of a place, which does not fit as it does not indicate the act of building.
• second: The word 'second' is an ordinal number that does not fit as it does not indicate the act of building.
• war: The word 'war' is a noun that refers to conflict, which does not fit as it does not indicate the act of building.

Correct answer: war

Explanation: The word 'war' is a noun that refers to conflict, which fits grammatically as the subject of the sentence. The context indicates that construction was interrupted again due to the outbreak of war, making 'war' the appropriate choice.

Meaning: 'War' refers to a state of armed conflict between different countries or different groups within a country.

Wrong options:

• area: The word 'area' is a noun that refers to a space or region, which does not fit as it does not indicate a cause for interruption.
• began: The word 'began' is the past tense of 'begin,' which does not fit as it does not indicate a noun that would cause interruption.
• construction: The word 'construction' is a noun that refers to the act of building, which does not fit as it does not indicate a cause for interruption.
• ground: The word 'ground' is a noun that refers to the surface of the earth, which does not fit as it does not indicate a cause for interruption.
• population: The word 'population' is a noun that refers to the inhabitants of a place, which does not fit as it does not indicate a cause for interruption.
• second: The word 'second' is an ordinal number that does not fit as it does not indicate a cause for interruption.

Correct answer: population

Explanation: The word 'population' is a noun that refers to the inhabitants of a place, which fits grammatically as the subject of the sentence. The context indicates that the local people must have been curious about the construction, making 'population' the appropriate choice.

Meaning: 'Population' refers to the total number of people inhabiting a particular area or place.

Wrong options:

• area: The word 'area' is a noun that refers to a space or region, which does not fit as it does not indicate the people wondering about the construction.
• began: The word 'began' is the past tense of 'begin,' which does not fit as it does not indicate a group of people.
• construction: The word 'construction' is a noun that refers to the act of building, which does not fit as it does not indicate the people wondering about the construction.
• ground: The word 'ground' is a noun that refers to the surface of the earth, which does not fit as it does not indicate a group of people.
• second: The word 'second' is an ordinal number that does not fit as it does not indicate a group of people.
• war: The word 'war' is a noun that refers to conflict, which does not fit as it does not indicate a group of people.