One of your classmates borrowed your comprehensive chemistry notes last month and has not returned them yet. Your final exam is approaching in two weeks and you urgently need the notes to revise. Draft communications and related items to request the return and explain why you need them.

a. Write an email (about 120–150 words) asking for the notes to be returned.

b. Write a short polite SMS reminder (one or two lines) you could send right away.

c. Rewrite the email in a more formal academic tone (about 80–100 words).

d. List three clear reasons why you need the notes back and state a reasonable deadline for their return.