Meaning: 'Prior' means before in time or order.

Wrong options:

• ready: The word 'ready' is an adjective indicating preparedness, which does not fit the context of describing a sequence of roles.
• entering: The word 'entering' is a gerund that implies beginning a new role, which does not convey the correct temporal relationship here.
• compare: The word 'compare' is a verb that suggests examining similarities or differences, which is irrelevant in this context.
• progressed: The word 'progressed' is a verb that indicates advancement, but it does not establish a prior relationship between the roles.
• Never: The word 'Never' is an adverb indicating not at any time, which contradicts the context of a career progression.

Correct answer: campus

Explanation: The term 'campus' is a noun that refers to the grounds and buildings of a university or college, fitting perfectly in the context of describing a specific location associated with the university.

Meaning: 'Campus' refers to the physical grounds of a university or college.

Wrong options:

• ready: The word 'ready' is an adjective that does not relate to a physical location and is irrelevant in this context.
• entering: The word 'entering' is a gerund that implies beginning a new role, which does not fit as a noun describing a place.
• compare: The word 'compare' is a verb that does not describe a location and is not appropriate here.
• progressed: The word 'progressed' is a verb that indicates advancement, which does not fit as a noun in this context.
• Never: The word 'Never' is an adverb that does not relate to a physical location and is not suitable here.

Correct answer: progressed

Explanation: The word 'progressed' is a verb that indicates advancement in David's career, fitting grammatically as it describes the transition from teaching to principal positions.

Meaning: 'Progressed' means to move forward or advance in a career or situation.

Wrong options:

• ready: The word 'ready' is an adjective that does not convey the action of career advancement and is irrelevant here.
• entering: The word 'entering' is a gerund that implies beginning a new role, which does not fit the context of describing a career path.
• compare: The word 'compare' is a verb that suggests examining similarities or differences, which is not applicable in this context.
• campus: The word 'campus' is a noun that refers to a physical location, which does not fit as a verb describing career advancement.
• Never: The word 'Never' is an adverb indicating not at any time, which does not relate to the action of progressing in a career.

Correct answer: entering

Explanation: The word 'entering' is a gerund that indicates the action of beginning a new phase in David's career, fitting grammatically as it describes the transition to higher education.

Meaning: 'Entering' means to begin or start something new.

Wrong options:

• ready: The word 'ready' is an adjective that does not convey the action of beginning a new role and is irrelevant here.
• progressed: The word 'progressed' is a verb that indicates advancement, which does not fit as it describes a prior action rather than the act of starting something new.
• compare: The word 'compare' is a verb that suggests examining similarities or differences, which is not applicable in this context.
• campus: The word 'campus' is a noun that refers to a physical location, which does not fit as a verb describing the action of entering a new phase.
• Never: The word 'Never' is an adverb indicating not at any time, which does not relate to the action of entering a new field.