Meaning: A 'thought' is an idea or mental representation that one considers.

Wrong options:

• say: The word 'say' is a verb that does not fit grammatically as a subject in this context.
• mention: The word 'mention' is also a verb and does not serve as a noun in this sentence.
• information: The word 'information' is a noun but does not fit the context of a concept related to forgetting.
• ashamed: The word 'ashamed' is an adjective and does not fit as a noun in this context.
• know-how: The term 'know-how' refers to practical knowledge or skills, which does not relate to the concept of forgetting.
• theory: The word 'theory' is a noun but does not capture the specific idea of forgetting as effectively as 'thought.'
• others: The word 'others' is a plural noun that does not fit the singular context of the sentence.

Correct answer: mention

Explanation: The word 'mention' is a verb that fits grammatically in the infinitive form, following 'to.' It aligns with the context of discussing things we might not want to bring up, such as feelings of guilt or shame.

Meaning: To 'mention' means to refer to something briefly or casually.

Wrong options:

• thought: The word 'thought' is a noun and does not fit the infinitive structure required here.
• say: The word 'say' is a verb but does not fit the context of referring to feelings or experiences.
• information: The word 'information' is a noun and does not fit the infinitive structure needed in this context.
• ashamed: The word 'ashamed' is an adjective and does not function as a verb in this sentence.
• know-how: The term 'know-how' refers to practical skills and does not fit the context of mentioning feelings.
• theory: The word 'theory' is a noun and does not fit the infinitive structure required here.
• others: The word 'others' is a plural noun and does not fit the infinitive structure needed in this context.

Correct answer: ashamed

Explanation: The word 'ashamed' is an adjective that describes the feelings associated with guilt or regret. It fits grammatically as it modifies the implied subject of the sentence, which relates to the things we feel guilty about.

Meaning: 'Ashamed' means feeling embarrassed or guilty about something.

Wrong options:

• thought: The word 'thought' is a noun and does not fit as an adjective in this context.
• mention: The word 'mention' is a verb and does not serve as an adjective to describe feelings.
• information: The word 'information' is a noun and does not fit the context of describing emotions.
• say: The word 'say' is a verb and does not fit as an adjective in this context.
• know-how: The term 'know-how' refers to practical skills and does not relate to feelings of guilt or shame.
• theory: The word 'theory' is a noun and does not fit as an adjective to describe emotions.
• others: The word 'others' is a plural noun and does not fit as an adjective in this context.

Correct answer: others

Explanation: The word 'others' is a plural noun that fits grammatically as it refers to additional items in a general sense. It aligns with the context of comparing shocking events to other types of memories.

Meaning: 'Others' refers to additional people or things that are not specified.

Wrong options:

• thought: The word 'thought' is a noun that does not fit the plural context required here.
• mention: The word 'mention' is a verb and does not fit as a noun in this context.
• information: The word 'information' is a noun but does not fit the plural context needed here.
• ashamed: The word 'ashamed' is an adjective and does not fit as a noun in this context.
• know-how: The term 'know-how' refers to practical skills and does not fit the context of comparing types of memories.
• theory: The word 'theory' is a noun but does not fit the plural context required here.
• say: The word 'say' is a verb and does not fit as a noun in this context.

Correct answer: information

Explanation: The word 'information' is a noun that fits grammatically as it serves as the object of the sentence. It aligns with the context of discussing what we often forget, specifically factual data learned for exams.

Meaning: 'Information' refers to knowledge or data that is communicated or received.

Wrong options:

• thought: The word 'thought' is a noun but does not fit the context of factual data learned for exams.
• mention: The word 'mention' is a verb and does not fit as a noun in this context.
• ashamed: The word 'ashamed' is an adjective and does not fit as a noun in this context.
• say: The word 'say' is a verb and does not fit as a noun in this context.
• know-how: The term 'know-how' refers to practical skills and does not fit the context of factual information.
• theory: The word 'theory' is a noun but does not fit the context of information learned for exams.
• others: The word 'others' is a plural noun and does not fit as a singular object in this context.