21. —If you are interested, I’ll bring you the book tomorrow.
—_____. It couldn’t be better.
A. No problem B. Thank you
C. That’s right D. Don’t mention it
22. The crazy young man _____ his fist to show his great anger.
A. made B. picked C. shook D. took
23. He is one of the most excellent students in our class, and he always _____ himself in his studies.
A. buries B. hides C. covers D. leaves
