In the sentence "My sister, a doctor, lives in New York," what is the appositive?

In the sentence "The student who studied the hardest received the highest grade," what is the relative clause?

What is the correct placement of adjectives in the sentence? "She has a big white old cat."

What is the correlative conjunctions in the sentence: "Either you come early, or we start without you."

Identify the infinitive phrase in the sentence: "She plans to visit her grandparents."

Identify the coordinating conjunction in the phrase: "He likes coffee, but she prefers tea."

Choose the correct sentence structure:

What type of sentence is: "If it rains, we will stay indoors."

Choose the sentence with correct use of the comma:

Identify the sentence with correct use of the subjunctive mood: