Meaning: 'All' means the whole quantity or number of something, in this case, referring to every building from the 19th and early 20th centuries around Tokyo.

Wrong options:

• part: 'Part' implies only a portion of the buildings, which contradicts the context that refers to the totality of the buildings restored.
• whole: 'Whole' suggests completeness but is less commonly used in this context compared to 'all' when referring to multiple items.
• entire: 'Entire' also indicates completeness but is more formal and less commonly used in this specific context than 'all'.

Correct answer: residential

Explanation: The term 'residential' is an adjective that describes the section as being related to residences, fitting grammatically before the noun 'section' and contextually indicating that this area is designated for living spaces.

Meaning: 'Residential' refers to an area primarily consisting of homes or living spaces, indicating that this section contains traditional houses.

Wrong options:

• resident: 'Resident' is a noun referring to a person who lives in a place, which does not fit grammatically as it does not describe the section itself.
• residence: 'Residence' is a noun that refers to a place where someone lives, but it does not function as an adjective to describe the section.
• residing: 'Residing' is a verb form that does not fit grammatically as it does not describe the section in the context needed.

Correct answer: ground

Explanation: The word 'ground' is the correct choice as it refers to the lowest part of a building, fitting grammatically as it aligns with the noun 'floor' and contextually indicates the specific level where the café is located.

Meaning: 'Ground' refers to the lowest floor of a building, commonly used to describe the main level where entrances are typically found.

Wrong options:

• base: 'Base' is a more general term that does not specifically refer to a floor and is less commonly used in this context.
• basis: 'Basis' refers to the underlying support or foundation of an idea or argument, which does not fit the physical context of a building's floor.
• foundation: 'Foundation' refers to the structural base of a building, not the floor level where the café is located.

Correct answer: to wander

Explanation: The phrase 'to wander' is the correct infinitive form that fits grammatically after 'are free' and contextually indicates permission for visitors to explore the area at their leisure.

Meaning: 'To wander' means to move about without a fixed course or destination, suggesting that visitors can explore freely.

Wrong options:

• wander: 'Wander' is the base form of the verb and does not fit grammatically after 'are free' as it lacks the infinitive form needed here.
• wandering: 'Wandering' is the gerund form, which does not fit grammatically in this context as it does not follow 'are free' correctly.
• wandered: 'Wandered' is the past tense form, which does not fit the present context of allowing visitors to explore.