What grammatical structures can be used to organize a long sentence?

Grammatical uses refer to how grammatical ______ are used to convey meaning. A: forms B: structures C: functions D: meanings

The central idea is __________. A: A declarative sentence that tells what you hope to accomplish with your speech B: A declarative phrase you want your audience to remember in your speech C: A single infinitive phrase that indicate what you want to accomplish with your speech D: An interrogative sentence that provokes the audience's curiosity and interest

It is sometimes difficult to tell the difference ______ the infinitive, the participle and the gerund.

The suggestion that you should have more rest. A: This is a complex sentence with an appositive clause and it's a correct sentence. B: This is a noun phrase with an appositive clause and it's a wrong sentence.