The physician started to perform the operation, but the patient was not yet completely _____ anesthesia.

Correct Answer: A

Rationale: The correct answer is 'under' as it is commonly used to describe the state of being affected by anesthesia. The patient is 'under' anesthesia, not 'within,' 'with,' or 'over' it. 'Within' typically refers to being inside something, 'with' indicates being accompanied by something, and 'over' suggests being above or on top of something. Therefore, in the context of the sentence, 'under' is the most appropriate choice.

Correct Answer: B

Rationale: The correct answer is 'B: sleeping.' In the sentence, 'as soon as the puppies were sleeping' functions as the dependent clause. A dependent clause is a group of words that contains a subject and a verb but cannot stand alone as a sentence. Choices A, C, and D do not form a dependent clause in the sentence provided. 'Slept' (A) is a verb in the past tense, 'awake' (C) is an adjective, and 'sleep' (D) is a noun. Therefore, 'sleeping' (B) is the only choice that correctly forms the dependent clause in this sentence.

Correct Answer: B

Rationale: The correct answer is 'B - was.' In the original question, 'were' is incorrectly used as the verb, which should be singular to match the singular subject 'procedure.' The subject 'procedure' requires the singular form 'was' instead of the plural form 'were.' Choices A, C, and D are all used correctly in the sentence.

Correct Answer: A

Rationale: The correct answer is A because the phrase 'walking to school' seems to modify 'a dollar,' which is illogical. The intended meaning is that the child found the dollar while walking to school. In sentence B, the modifier is correctly placed at the beginning of the sentence, indicating that the child found the dollar while walking to school. Choices C and D do not contain any misplaced modifiers.

Correct Answer: B

Rationale: The correct answer is 'She was going to the store.' This sentence uses the correct form of the past continuous tense, which is appropriate for describing an action in progress in the past. Choice A is the only option that uses the correct verb form. Choice C uses the present perfect tense, which is not suitable for describing a past action in progress. Choice D is incorrect as it lacks the auxiliary verb 'has' in the sentence structure.