21. One of the main points the narrator makes in this passage is that:

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

Item C: L54-64 shows that one thing my sister and I have in common is that we are both lonely and difficult to integrate into everyone at school.

Item A: too general does not describe the characteristics of the entire high school life, but only tells the personal experience of the author and his sister.

Item B: L43 only mentioned it, but did not expand the argument.

Item D: Create something out of nothing.