Meaning: 'Wonder' means to feel curiosity or to be in doubt about something.

Wrong options:

• trained: 'Trained' is an adjective that describes someone who has received training, which does not fit the context of expressing curiosity.
• technological: 'Technological' is an adjective relating to technology, which is irrelevant in the context of questioning the source of money.
• won: 'Won' is the past tense of 'win,' which does not fit as it does not express a state of curiosity.
• responsible: 'Responsible' is an adjective that indicates accountability, which does not fit the context of wondering about the money's origin.
• invaded: 'Invaded' is a verb that means to enter forcefully, which is unrelated to the context of questioning or curiosity.
• maintain: 'Maintain' is a verb that means to keep something in a certain state, which does not fit the context of expressing wonder.

Correct answer: won

Explanation: The word 'won' is the past participle of 'win,' fitting grammatically as it describes an event that has occurred. Contextually, it refers to the outcome of a sweepstake, which aligns with the gambling theme.

Meaning: 'Won' means to have achieved victory or success in a game or competition.

Wrong options:

• trained: 'Trained' is an adjective that does not fit as it does not describe an event related to winning a sweepstake.
• technological: 'Technological' is an adjective that relates to technology, which is irrelevant in the context of winning a sweepstake.
• wonder: 'Wonder' is a verb that expresses curiosity, which does not fit as it does not describe the outcome of a sweepstake.
• responsible: 'Responsible' is an adjective that indicates accountability, which does not fit the context of winning.
• invaded: 'Invaded' is a verb that means to enter forcefully, which is unrelated to the context of winning.
• maintain: 'Maintain' is a verb that means to keep something in a certain state, which does not fit the context of winning a sweepstake.

Correct answer: matter

Explanation: The word 'matter' serves as a noun that refers to a subject or situation. It fits grammatically and contextually as it describes the nature of the event of winning a sweepstake.

Meaning: 'Matter' refers to a subject or situation that is being considered.

Wrong options:

• trained: 'Trained' is an adjective that describes someone who has received training, which does not fit as it does not describe the nature of the event.
• technological: 'Technological' is an adjective that relates to technology, which is irrelevant in the context of describing the event of winning.
• wonder: 'Wonder' is a verb that expresses curiosity, which does not fit as it does not describe a subject or situation.
• responsible: 'Responsible' is an adjective that indicates accountability, which does not fit the context of describing the nature of winning.
• invaded: 'Invaded' is a verb that means to enter forcefully, which is unrelated to the context of describing an event.
• maintain: 'Maintain' is a verb that means to keep something in a certain state, which does not fit the context of describing the nature of winning.

Correct answer: responsible

Explanation: The word 'responsible' is an adjective that describes the cause of the windfall. It fits grammatically as it describes the noun 'matter' and contextually indicates accountability for the outcome.

Meaning: 'Responsible' means being the primary cause or reason for something.

Wrong options:

• trained: 'Trained' is an adjective that describes someone who has received training, which does not fit as it does not indicate causation.
• technological: 'Technological' is an adjective that relates to technology, which is irrelevant in the context of describing causation.
• wonder: 'Wonder' is a verb that expresses curiosity, which does not fit as it does not describe a cause.
• matter: 'Matter' is a noun that refers to a subject or situation, which does not fit as it does not indicate causation.
• invaded: 'Invaded' is a verb that means to enter forcefully, which is unrelated to the context of describing causation.
• maintain: 'Maintain' is a verb that means to keep something in a certain state, which does not fit the context of indicating causation.

Correct answer: trained

Explanation: The word 'trained' is an adjective that describes the skill of the gliders, drivers, and divers. It fits grammatically as it modifies the noun 'skill' and contextually indicates the level of expertise.

Meaning: 'Trained' means having received instruction or practice in a particular skill.

Wrong options:

• technological: 'Technological' is an adjective that relates to technology, which does not fit as it does not describe a skill.
• wonder: 'Wonder' is a verb that expresses curiosity, which does not fit as it does not describe a skill.
• responsible: 'Responsible' is an adjective that indicates accountability, which does not fit the context of describing skill.
• matter: 'Matter' is a noun that refers to a subject or situation, which does not fit as it does not describe a skill.
• invaded: 'Invaded' is a verb that means to enter forcefully, which is unrelated to the context of describing skill.
• maintain: 'Maintain' is a verb that means to keep something in a certain state, which does not fit the context of describing skill.