"Reticent" means unwilling to share information fitting the description making option B correct. "Dumb" implies inability to speak "quaint" means charmingly old-fashioned and "queer" means strange all incorrect. One-word substitutions enhance vocabulary useful in writing or speaking. This skill ensures precise expression especially in character descriptions or professional contexts. Accurate vocabulary conveys traits effectively particularly in narratives or reports where precise language enhances the portrayal of personalities or behaviors clearly and professionally in various settings.

"Aficionado" means an enthusiastic follower and "devotee" is a synonym making option C correct. Other options are incorrect. Synonym knowledge enhances vocabulary useful in writing or speaking. Choosing the right synonym ensures precise expression especially in descriptive or cultural contexts. This skill is vital for professional communication. Accurate synonyms convey enthusiasm effectively particularly in reviews or narratives where precise language enhances clarity and impact in describing passions or interests.

"So as to" indicates purpose fitting the context of studying abroad to improve skills making option B correct. Other options are incorrect. Proper conjunction usage ensures clarity especially in academic or professional writing. This skill is vital for professional communication. Accurate conjunctions convey purpose effectively particularly in advice or educational contexts where precise language enhances clarity and impact in recommendations or instructions for skill development.

"The the" is correct for a specific organization and elderly group making option D correct. Other options misuse articles. Correct article usage ensures grammatical precision especially in formal writing or speech. This skill is vital for professional communication. Accurate articles enhance clarity in reports or presentations particularly when referring to specific entities where precise language ensures clear and professional communication in academic or professional contexts enhancing understanding and credibility.

"Wrath" means intense anger and its antonym "delight" implies a positive emotion making option A correct. Other options are synonyms or unrelated. Antonym knowledge enhances vocabulary useful in writing or speaking. Contrasting ideas clarify descriptions especially in narratives or critiques. This skill is vital for professional communication. Accurate antonyms convey contrasting emotions effectively particularly in stories or reviews where precise language enhances the portrayal of feelings or states clearly and effectively in various settings.

The correct spelling is "parallel" making option C correct. Other options are misspellings. Proper spelling ensures clarity especially in formal writing or scientific reports. This skill is vital for professional communication. Accurate spelling enhances credibility in documents or presentations particularly in academic or technical contexts where precise language ensures clear and professional communication avoiding errors that could distract or confuse readers in various settings.

"Fickle" means changeable and its antonym "loyal" means steadfast making option C correct. Other options are unrelated. Antonym knowledge enhances vocabulary useful in writing or speaking. Contrasting ideas clarify descriptions especially in narratives or critiques. This skill is vital for professional communication. Accurate antonyms convey contrasting qualities effectively particularly in stories or reviews where precise language enhances the portrayal of characteristics or behaviors clearly and effectively in various settings.

The active voice "We have bought a present for our teacher" becomes the passive "A present has been bought for our teacher" making option A correct. Other options are incorrect. Proper voice change ensures grammatical accuracy especially in formal writing or analysis. This skill is vital for professional communication. Accurate voice usage conveys actions clearly particularly in reports or narratives where passive constructions enhance clarity or focus in various contexts.

"Into" indicates movement into the house making it the correct preposition. Other options don’t fit. Proper preposition usage ensures clarity especially in descriptive writing or narratives. This skill is vital for professional communication. Accurate prepositions convey actions or directions effectively particularly in stories or reports where precise language enhances the description of movements or locations ensuring clear and engaging communication in various settings.

"Iterate" means to repeat and "repeat" is a synonym making option B correct. Other options are unrelated. Synonym knowledge enhances vocabulary useful in writing or speaking. Choosing the right synonym ensures precise expression especially in technical or procedural contexts. This skill is vital for professional communication. Accurate synonyms convey actions effectively particularly in instructions or reports where precise language enhances clarity and impact in describing processes or repetitions.

"Accede" means to agree or consent and "consent" is a synonym making option D correct. Other options are unrelated. Synonym knowledge enhances vocabulary useful in writing or speaking. Choosing the right synonym ensures precise expression especially in formal or diplomatic contexts. This skill is vital for professional communication. Accurate synonyms convey agreement effectively particularly in negotiations or agreements where precise language enhances clarity and impact in expressing consent or decisions.

"Although" indicates contrast fitting the context of working hard but failing making option D correct. Other options are incorrect. Proper conjunction usage ensures clarity especially in narrative or analytical writing. This skill is vital for professional communication. Accurate conjunctions convey relationships effectively particularly in essays or reports where precise language enhances clarity and impact in describing contrasts or outcomes in various contexts.

"Trifle" means something insignificant and "trivial" is a synonym making option B correct. Other options are unrelated. Synonym knowledge enhances vocabulary useful in writing or speaking. Choosing the right synonym ensures precise expression especially in descriptive or analytical contexts. This skill is vital for professional communication. Accurate synonyms convey significance effectively particularly in essays or reports where precise language enhances clarity and impact in describing minor details or issues.

The correct spelling is "interruption" making option B correct. Other options are misspellings. Proper spelling ensures clarity especially in formal writing or professional correspondence. This skill is vital for professional communication. Accurate spelling enhances credibility in documents or emails particularly in business or academic contexts where precise language ensures clear and professional communication avoiding errors that could distract or confuse readers in various settings.

The direct speech changes to indirect with "I asked him what his next plan was" matching tense and structure making option D correct. Other options have errors. Proper indirect speech ensures grammatical accuracy especially in reported speech or narratives. This skill is vital for professional communication. Accurate indirect speech conveys conversations clearly particularly in reports or stories where precise reporting of dialogue enhances clarity and authenticity in various contexts.

"Demur" means to object or hesitate and its antonym "accept" means to agree making option B correct. Other options are unrelated. Antonym knowledge enhances vocabulary useful in writing or speaking. Contrasting ideas clarify intentions especially in negotiations or discussions. This skill is vital for professional communication. Accurate antonyms convey contrasting actions effectively particularly in debates or reports where precise language enhances clarity and impact in expressing agreement or disagreement.

The direct speech changes to indirect with "He wished that I might have a long life" maintaining tense and meaning making option B correct. Other options have errors. Proper indirect speech ensures grammatical accuracy especially in reported speech or narratives. This skill is vital for professional communication. Accurate indirect speech conveys conversations clearly particularly in reports or stories where precise reporting of dialogue enhances clarity and authenticity in various contexts.

The active voice "She is singing the song" becomes the passive "The song is being sung by her" matching tense and structure making option C correct. Other options have errors. Proper voice change ensures grammatical accuracy especially in formal writing or analysis. This skill is vital for professional communication. Accurate voice usage conveys actions clearly particularly in reports or narratives where passive constructions enhance clarity or focus in various contexts.

"Dank" means damp or wet and its antonym "dry" means lacking moisture making option D correct. Other options are unrelated. Antonym knowledge enhances vocabulary useful in writing or speaking. Contrasting ideas clarify descriptions especially in environmental or narrative contexts. This skill is vital for professional communication. Accurate antonyms convey contrasting qualities effectively particularly in descriptions or reports where precise language enhances clarity and impact in portraying conditions or settings.

"Indolent" means lazy and its antonym "diligent" means hardworking making option C correct. Other options are unrelated. Antonym knowledge enhances vocabulary useful in writing or speaking. Contrasting ideas clarify descriptions especially in professional or narrative contexts. This skill is vital for professional communication. Accurate antonyms convey contrasting qualities effectively particularly in evaluations or stories where precise language enhances clarity and impact in describing work ethics or behaviors.