English

The correct preposition to use with 'aware' in this context is 'of'. The phrase 'aware of' means having knowledge or consciousness about something, which fits the sentence meaning.

The word 'calumny' means making false and defamatory statements about someone, which is synonymous with 'slander'. The other options do not share this meaning.

Option C correctly converts the passive voice sentence into active voice with proper grammar: 'We should not encourage indiscipline.' The other options contain grammatical errors or incorrect verb forms.

The word "banal" means something that is common, ordinary, or unoriginal. The antonym is "extraordinary," which means very unusual or remarkable, making option C the correct answer.

The correct passive voice of the sentence 'The boy did not break the glass' is 'The glass was not broken by the boy.' This is because the original sentence is in the simple past tense negative form, and the passive voice must match this tense.

The word 'impecunious' means having little or no money; poor. The antonym is 'wealthy,' which means having a lot of money or riches, making option A correct.

The word "impregnable" means unable to be captured or broken into, so its synonym is "unconquerable." The other options do not share this meaning.

Option C correctly forms the passive voice of the present perfect question by using 'Have' to agree with the plural subject 'all the necessary arrangements,' followed by 'been made by someone.' The word order and verb agreement are accurate here.

The correct preposition to use in this context is 'among' because it refers to being popular within a group of people (her friends). 'With' is incorrect here as it usually indicates accompaniment, not popularity within a group.

The word "pococurante" means indifferent or unconcerned, which is synonymous with "blase," meaning unimpressed or indifferent to something because of overfamiliarity or excess. The other options do not convey this meaning.