A.I. Explanation:

Correct answer: to win

Explanation: The phrase 'to win' is the correct infinitive form that follows the structure of 'became the first golfer in more than twenty years,' indicating an achievement. This fits grammatically as it expresses the purpose or result of becoming the first golfer.

Meaning: 'To win' means to achieve victory in a competition, which in this context refers to Tiger Woods achieving this milestone in golf.

Wrong options:

• winning: 'Winning' is a gerund and does not fit the infinitive structure required here.
• to be winning: 'To be winning' suggests an ongoing action, which does not align with the completed achievement of becoming the first golfer.
• to have been won: 'To have been won' implies a completed action in the past, which does not fit the context of becoming the first golfer.

Correct answer: competitions

Explanation: The word 'competitions' is a noun that correctly refers to events where golfers compete, fitting grammatically as it aligns with the context of professional golf events.

Meaning: 'Competitions' refers to events where individuals or teams compete against each other, in this case, in golf.

Wrong options:

• competitively: 'Competitively' is an adverb and does not fit as a noun in this context.
• contestants: 'Contestants' refers to individuals participating in a competition, but does not fit as a general term for the events themselves.
• contests: 'Contests' is a synonym but is less formal and does not match the professional context as well as 'competitions.'

Correct answer: all

Explanation: The word 'all' is a determiner that appropriately indicates the totality of the four championships, fitting grammatically and contextually within the sentence structure.

Meaning: 'All' means the entire number or amount, indicating that Tiger Woods held every one of the four championships simultaneously.

Wrong options:

• whole: 'Whole' implies completeness but does not convey the same meaning of totality as 'all.'
• the all: 'The all' is not a standard phrase in English and does not fit grammatically.
• the whole: 'The whole' is similar to 'whole' but does not fit the context of counting championships.

Correct answer: at

Explanation: The preposition 'at' is used to indicate a specific point in time or location, which fits grammatically and contextually with 'the same time.'

Meaning: 'At' indicates a specific point or moment, in this case, referring to the simultaneous holding of championships.

Wrong options:

• for: 'For' suggests a duration or purpose, which does not fit the context of a specific time.
• within: 'Within' implies being inside a boundary or limit, which does not apply here.
• in: 'In' could suggest a period but does not convey the same precision as 'at' in this context.

Correct answer: won

Explanation: The word 'won' is the simple past tense of 'win,' which fits grammatically as it indicates a completed action in the past, aligning with the timeline of events.

Meaning: 'Won' means to have achieved victory in a competition, indicating that Tiger Woods achieved this in the past.

Wrong options:

• has won: 'Has won' is present perfect and suggests an ongoing relevance, which does not fit the past context here.
• was won: 'Was won' implies that someone else won, which is incorrect as it refers to Tiger Woods' achievement.
• has been won: 'Has been won' is also present perfect passive, which does not fit the active context of Tiger Woods winning.