Correct Answer: B

Rationale: The predicate in a sentence is the part that tells what the subject is doing or what is being done to the subject. In this sentence, 'built a sandcastle' is the predicate as it is the action performed by the subject 'children.' 'On the beach' is a prepositional phrase that provides additional information but is not the predicate. Choice C 'children' is the subject of the sentence, and choice D 'the' is an article referring to 'children,' making them incorrect choices for the predicate.

Correct Answer: C

Rationale: Option C correctly places the participle phrase 'Reading the book' directly in front of the subject 'I,' ensuring that there is no dangling modifier. This structure establishes a clear connection between the action described in the introductory phrase and the subject performing the action, resulting in a grammatically correct sentence. Choice A, B, and D have dangling modifiers. In choice A, the phrase 'Walking down the street' should be followed by the noun it is describing to avoid the dangling modifier. Choice B has a dangling modifier as 'Having finished the report' does not have a clear subject to relate to. Choice D also has a dangling modifier as 'Exhausted from the hike' is not properly connected to the subject in the sentence.

Correct Answer: C

Rationale: The sentence 'Wow, what a beautiful sunset!' expresses strong emotion ('Wow') and conveys an exclamation, indicating that it is an exclamatory sentence. Exclamatory sentences are used to show strong feelings or emotions and typically end with an exclamation mark. Choice A, 'Interrogative sentence,' is incorrect because interrogative sentences ask questions, which this sentence does not. Choice B, 'Declarative sentence,' is incorrect because declarative sentences make statements or convey information, which is not the case here. Choice D, 'Imperative sentence,' is incorrect because imperative sentences give commands or instructions, which are not present in the given sentence.

Correct Answer: C

Rationale: The correct answer is C. The idiom 'to cross that bridge when we come to it' means to deal with challenges as they arise, not worrying about them prematurely. It suggests addressing problems when they actually occur rather than stressing over potential issues in advance. Choice A, 'To deal with a problem immediately,' is incorrect because the idiom is about not addressing problems prematurely. Choice B, 'To plan for the future in detail,' is incorrect as it goes against the essence of the idiom, which is about dealing with issues when they happen, not planning extensively in advance. Choice D, 'To avoid difficult situations,' is incorrect as the idiom implies facing challenges when they present themselves rather than avoiding them.

Correct Answer: C

Rationale: Option C correctly uses the phrase 'by the way' to introduce additional information that is not directly related to the previous sentence, making it a natural and appropriate use of the phrase in casual conversation. Choices A, B, and D do not use 'by the way' in the same context as option C. Choice A incorrectly uses 'by the way' to convey winning the lottery, which is not a casual or incidental piece of information. Choice B incorrectly uses 'by the way' after a semicolon in a way that disrupts the flow of the sentence. Choice D correctly uses 'by the way' but the information provided about the movie starting time is not a casual or incidental addition, unlike in option C.