Answer:
The teacher told me that I hadn't finished the project yet.
Answer:
The significance of Jack's mask in chapter 4 of Lord of the Flies is that it allows him to feel liberated from "shame and self-consciousness" as he embraces his savage nature without guilt or embarrassment. Hidden behind his clay mask, Jack is free to behave like a primitive, bloodthirsty savage.
The adjective clause in this sentence is 'who has read thousands of books'. It is an appositive, separated from the rest of the text by commas, and has an adjectival meaning - it modifies the noun, Anthony.
