Meaning: 'Is' is the third person singular present tense of 'to be,' used here to indicate that the World Congress takes place every five years.

Wrong options:

• are: The verb 'are' is plural and does not agree with the singular subject 'World Congress.'
• have: The verb 'have' is not appropriate here as it does not convey the correct meaning of the event being held.
• has: The verb 'has' is also singular but does not fit the structure of the sentence, which requires a form of 'to be' to indicate the event's occurrence.

Correct answer: in

Explanation: The preposition 'in' is correctly used to indicate location, as delegates will arrive within the city of London. This fits both grammatically and contextually with the sentence structure.

Meaning: 'In' indicates being inside or within a place, which is appropriate for describing the delegates' arrival in London.

Wrong options:

• at: The preposition 'at' suggests a specific point rather than being within the city, making it less suitable in this context.
• on: The preposition 'on' typically refers to surfaces or specific days, which does not fit the context of arriving in a city.
• to: The preposition 'to' indicates direction rather than location, which does not accurately describe the delegates' arrival.

Correct answer: With

Explanation: The word 'With' introduces the main theme of the Congress, indicating that the theme accompanies the event. This fits grammatically and contextually as it connects the theme to the Congress.

Meaning: 'With' indicates accompaniment or association, suggesting that the theme is a significant part of the Congress.

Wrong options:

• Above: The word 'Above' does not logically connect to the theme being discussed and is not used to introduce themes or topics.
• To: The word 'To' implies direction or purpose, which does not fit the context of introducing a theme.
• Beyond: The word 'Beyond' suggests something further than or outside of, which does not appropriately introduce the theme of the Congress.

Correct answer: at

Explanation: The preposition 'at' is used to indicate focus or attention on a specific subject, which in this case is the global relevance of Shakespeare's work. This fits grammatically and contextually with the sentence.

Meaning: 'At' indicates a point of focus or consideration, which is suitable for discussing the Congress's examination of Shakespeare's relevance.

Wrong options:

• in: The preposition 'in' suggests being inside something, which does not accurately convey the focus of the Congress on the relevance of Shakespeare's work.
• over: The preposition 'over' implies a sense of superiority or control, which does not fit the context of examining relevance.
• on: The preposition 'on' could work but is less precise than 'at' in indicating the focus of the Congress.