Which sentence correctly answers the question: What were you doing when the thunderstorm started?

Correct Answer: C

Rationale: The correct answer is 'C: I was mowing the lawn.' This sentence correctly uses the past continuous tense to indicate an action that was in progress at a specific time in the past when the thunderstorm started. Choice A 'I mowed the lawn' is in simple past tense, not past continuous, and does not convey the ongoing nature of the action. Choice B 'I am mowing the lawn' is in present continuous tense, not past continuous, and does not match the past timeframe. Choice D 'I have mowed the lawn' is in present perfect tense, not past continuous, and does not convey the ongoing action at a specific past time.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: A

Rationale: Choice A, 'Our home's roof needs repairing,' is the correct answer as it correctly uses the apostrophe to indicate possession. In this sentence, the apostrophe is used to show that the roof belongs to the home. Choice B is incorrect because it should be 'My grandparents' families' to show that multiple families belong to the grandparents. Choice C is incorrect as the sentence should be 'There are many parks located across the country' without using an apostrophe. Choice D is incorrect because it should be 'All of the women's things' to indicate possession by the women.

Correct Answer: B

Rationale: 'Silently' is an adverb in this sentence as it describes how the villain laughed. Adverbs modify verbs, adjectives, or other adverbs. In this case, 'silently' is modifying the verb 'laughed,' indicating the manner in which the action was performed. Choices A, C, and D are incorrect. 'Silently' is not a preposition (A) as it doesn't show a relationship between nouns or pronouns. It is not a verb (C) because it doesn't express an action or state of being. Additionally, it is not an adjective (D) since it does not describe a noun or pronoun.

Correct Answer: C

Rationale: The sentence is a direct question as the speaker is asking if the person will send a postcard from Germany. Therefore, the correct punctuation mark to use at the end of a question is a question mark. An exclamation mark (Choice D) is used to convey strong emotion or surprise, which is not the case here. A period (Choice A) is used for declarative statements. A colon (Choice B) is used to introduce a list or explanation, which is not needed in this context.