Correct Answer: B

Rationale: The word 'library' is incorrect in this context. It should be 'librarian' to be grammatically correct. The other choices ('an,' 'as,' 'during') are all grammatically correct and fit appropriately in the sentence.

Correct Answer: C

Rationale: The correct answer is 'C: Threw.' In this sentence, we need the past tense form of the verb 'throw' to show the action that occurred. Therefore, 'threw' is the correct choice. 'Thorough' (choice A) means complete or exhaustive, which doesn't fit the context of the sentence. 'Through' (choice B) is a preposition or an adverb, not the correct verb form. 'Throwing' (choice D) is the present participle form and does not match the past tense needed in the sentence.

Correct Answer: D

Rationale: The correct answer is D: 'I wore a white shirt and dark jeans to show my goat at the country fair.' 'Wore' is the correct past tense form of 'wear.' Choice A is incorrect as 'seen' should be 'saw,' which is the correct past tense of 'see.' Choice B is incorrect as 'sung' should be 'sang,' the correct past tense of 'sing.' Choice C is incorrect as 'ran' is the correct verb, but the question specifically asks for the correct use of a verb, not just any verb.

Correct Answer: A

Rationale: The term 'fracture' refers to a 'break' in the bone. A fracture is a medical condition where there is a crack or break in a bone. 'Brake' refers to a device used to stop or slow down a vehicle. 'Cut' means to make an opening or incision with a sharp tool. 'Cure' means to relieve a person of the symptoms of a disease or condition.

Correct Answer: B

Rationale: The correct answer is B: 'meat-eating.' The term 'carnivore' specifically refers to an animal that primarily consumes meat. Choices A, C, and D are incorrect because 'hungry' means feeling the need to eat, 'infected' refers to being affected by a disease or pathogen, and 'demented' means to be mentally disturbed.