Answer:
Aids is a worldwide problem
Answer:
In general, works cited lists are arranged alphabetically by the author's last name. If the author is unknown, entries are alphabetized by the first word in their titles (note, however, to drop A, An, or The).
Explanation:
"she" would be the pronoun.
You can rewrite this question as "She is your best friend?"
So in that case, "she" would be the subject.
In English, you just switch around "is" and the subject to make a question and make it sound Englishy
PS in Italian (and probably other languages) you would just say "She is your best friend?"