Option 2 is correct because “Although” demands contrast, making “exciting” to “dull” the most fitting progression.

Option 2 is correct because the verb “divide” correctly takes the preposition “into” when separating components.

Option 1 is correct because ‘meticulous’ means displaying great attention to detail and care.

Option 1 is correct because “angry about” is used when referring to situations or circumstances.

Option 1 is correct because syllables build words, just as complete sentences build a structured paragraph.

Option 3 is correct as the passive past perfect “had not been paid” properly reflects an action prior to their claim.

Option 2 is correct because ‘convivial’ means lively and enjoyable, making ‘dull’ its direct antonym.

Option 2 is correct because a mirror’s primary intrinsic function is to reflect, just as a key’s primary function is to open.

Option 2 is correct because ‘tranquil’ means free from disturbance and peacefully calm.

Option 2 is correct because the past simple “came” correctly sequences with the past perfect “had left” for an earlier action.

Option 2 is correct because ‘affinity’ means an inherent sympathy or close connection to something.

Option 2 is correct because ‘deferential’ means respectful and humble, making ‘disobedient’ the antonym.

Option 1 is correct because “nonetheless” properly signals contrast between the careful writing and the missed topic.

Option 1 is correct because opaque and transparent are antonyms describing light passage, matching brittle and flexible regarding material rigidity.

Option 2 is correct because “Whether… or” introduces alternative conditional clauses required for the sentence logic.

Option 4 is correct because pulp is the soft interior tissue of an orange, just as marrow is the soft interior tissue of a bone.

Option 1 is correct because ‘alleviate’ specifically means to lessen or reduce severity.

Option 1 is correct because ‘bombastic’ means high-sounding and pretentious, making ‘modest’ its antonym.

Option 2 is correct because ‘acrimonious’ means bitter and angry, making ‘gentle’ its direct antonym.

Option 2 is correct because ‘prosperity’ signifies wealth and success, making ‘poverty’ its clear antonym.

Option 3 is correct because “Neither” is grammatically singular and requires the singular verb “is”.

Option 3 is correct because a carpenter uses a chisel as a precise hand-held cutting tool, just as a surgeon uses a scalpel.

• Option 3 is correct because ‘candid’ means completely truthful, frank, and honest.

Option 2 is correct as severe fatigue (“exhausted”) logically leads to a desire for restful sleep (“peaceful”).

Option 2 is correct because ‘credible’ means plausible or believable, making ‘doubtful’ its antonym.

Option 3 is correct because peace and war represent opposing geopolitical states, matching truce and battle.

Option 2 is correct because helping weaker peers demonstrates genuine empathy (“sincere… compassionate”).

Option 2 is correct because compelling evidence (“convincing”) naturally sways skeptical listeners (“impressed”).

Option 2 is correct because ‘secluded’ means isolated or sheltered from others, making ‘social’ the opposite.

Option 4 is correct because bears undergo winter dormancy (hibernate), while snails undergo summer dormancy (aestivate).

Option 2 is correct because ‘erudite’ means possessing or showing great knowledge and learning.

Option 2 is correct because ‘frugal’ means careful and economical with money without being excessively stingy.

Option 1 is correct because ‘affable’ means friendly and good-natured, making ‘rude’ its proper opposite.

Option 3 is correct because passive structures with “make” require a full infinitive “to wait”.

Option 1 is correct because ‘capricious’ means unpredictable and erratic, making ‘steady’ the proper opposite.

Option 1 is correct because ‘malice’ refers to the desire to cause harm or deep hatred.

Option 1 is correct because ‘pragmatic’ describes dealing with matters sensibly and practically.

Option 1 is correct because diligent and lazy are direct antonyms, just as noisy and quiet are direct antonyms.

Option 1 is correct because “By this time next year” specifies a future completed action requiring the future perfect tense.

Option 2 is correct because ‘indolent’ means lazy and inactive, making ‘energetic’ its direct opposite.

Option 2 is correct because “despite the chaos” indicates composure and emotional stability under stress.

Option 2 is correct because ‘obfuscate’ means to deliberately render obscure, unclear, or hidden.

Option 3 is correct because a sapphire is a specific type of gem, just as copper is a specific type of metal.

Option 3 is correct because third conditional structures require “had approved” in the if-clause to match “could have started”.

Option 1 is correct because a volcano undergoes a sudden structural transformation when erupting, just as a glacier does when melting.