Incorrect. The correlative conjunction pair is “both… and,” not “both… as well as.” Therefore, “as well as” should be replaced with “and.” Additionally, “their” is the correct possessive adjective. Example: “You can access the document both from the website and from the mobile app.” (Not: “You can access the document both from the website as well as from the mobile app.”)

Incorrect. The subject “Wise” is singular (the name of a firm), so the verb must also be singular. Therefore, “have announced” should be replaced with “has announced.” Additionally, “principle” (a rule or belief) is correct, not “principal” (head of an institution). Example: “The company has announced its expansion plans.” (Not: “The company have announced its expansion plans.”)

Incorrect. The phrase “buzz off” is an informal idiomatic expression meaning to leave or go away. The sentence is grammatically correct and contextually appropriate. Example: “I’m tired; it’s time for me to buzz off.” (similar correct usage).

Incorrect. The phrase “half a dozen suspects” is plural, so the auxiliary verb must also be plural. Therefore, “has been arrested” should be replaced with “have been arrested.” Example: “Half a dozen students have been selected for the scholarship.” (Not: “Half a dozen students has been selected for the scholarship.”)

Incorrect. The subject “fears” is plural, so the verb must also be plural. Therefore, “there is” should be replaced with “there are.” Example: “There are greater concerns about the economy.” (Not: “There is greater concerns about the economy.”)

Incorrect. The passive voice requires “are/were + past participle.” The past participle of “beset” is “beset.” Additionally, “challenge” should be plural “challenges” to match the multiple sectors. Therefore, “had beset by challenge” should be replaced with “are beset by challenges.” Example: “All nations are beset by challenges in various sectors.” (Not: “All nations had beset by challenge in various sectors.”)

Incorrect. The sentence is grammatically correct. “Sustainable development” is the correct term, the verb “requires” agrees with the gerund subject “Ensuring,” and “more than” is the correct comparative phrase. Example: “Achieving success requires more than just hard work.” (similar correct structure).

Incorrect. The article “an” is used before vowel sounds, while “a” is used before consonant sounds. Since “leopard” begins with a consonant sound, “a” should be used instead of “an.” Example: “I saw a leopard at the zoo.” (Not: “I saw an leopard at the zoo.”)

Incorrect. The preposition “despite” is never followed by “of.” It is used directly before a noun or gerund. Therefore, “Despite of” should be replaced with “Despite.” Example: “Despite the rain, we went outside.” (Not: “Despite of the rain, we went outside.”)

Incorrect. The relative pronoun “that” refers to “Black holes” (plural), so the verb must be plural “do,” not “does.” Additionally, “allow” is followed by “to + base verb” (to pass), and “passed” should be “pass.” Example: “The gates that do not allow entry are locked.” (Not: “The gates that does not allow entry is locked.”)

Incorrect. The word “natives” is a noun, but the sentence requires the adjective “native” to modify “residents.” Also, “defined” (past tense) should be “defines” (present tense) to indicate a current definition. Example: “The rule which defines the native population is important.” (Not: “The rule which defined the natives population is important.”)

Incorrect. The phrase “a dozen of pieces” is grammatically correct when referring to a specific number of items. “Dozen” can be followed by “of” when used with a plural noun. Example: “She bought a dozen of eggs from the market.” (similar correct usage).

Incorrect. Using “comparatively” before a comparative adjective like “faster” is redundant. Either “comparatively fast” or “faster” should be used, not both. Therefore, “comparatively faster than” should be replaced with “comparatively fast than” or simply “faster than.” Example: “She is fast compared to her peers.” (Not: “She is comparatively faster than her peers.”)

Incorrect. The present perfect tense is formed with “has/have + past participle,” not “has + being + past participle.” Therefore, “has being planned” should be replaced with “has planned.” Example: “She has planned a trip to the mountains.” (Not: “She has being planned a trip to the mountains.”)

Incorrect. The passive voice is required here because fuel prices cannot “expect” anything; they are expected by people to go down. Therefore, “expect to go down” should be replaced with “are only expected to go down.” Example: “Prices are expected to rise next month.” (Not: “Prices expect to rise next month.”)

Incorrect. After the preposition “of,” a gerund (verb + ing) should be used. Therefore, “built” should be replaced with “building.” The phrase should read “The cost of building a new school.” Example: “The cost of constructing a bridge is high.” (Not: “The cost of constructed a bridge is high.”)

Incorrect. The word “exorbitant’s” is incorrect because it uses a possessive form unnecessarily. The correct phrase is “an exorbitant rent,” where “exorbitant” is an adjective modifying “rent.” Example: “The taxi came at an exorbitant fare.” (Not: “The taxi came at an exorbitant’s fare.”)

Incorrect. The future tense is formed with “will + base verb,” not “will + be + base verb.” Therefore, “will be happen” should be replaced with “will happen.” Example: “The event will happen next week.” (Not: “The event will be happen next week.”)

Incorrect. The conjunction “moreover” is used to add information, not to express a condition. The sentence requires a conditional conjunction. Therefore, “moreover” should be replaced with “if” to indicate the condition under which compensation will be given. Example: “They will receive compensation if they are injured during work.” (Not: “They will receive compensation moreover they are injured during work.”)

Incorrect. The sentence requires a finite verb in the past tense, not a participle. Therefore, “translating” should be replaced with “translated” to function as the main verb in the clause. Example: “The issue translated into votes was significant.” (Not: “The issue translating into votes was significant.”)