21. — Shall I give you a hand with this as you are so busy now?
— Thank you. _______.
A. Of course you can B. If you like C. It’s up to you D. It couldn’t be better
22. -- -- Which of the two poems do you like better?
----- ________ shorter one, of course. I think it’s really ________ most interesting one.
A. A; the B. The; a C. The; the D. A; a