21. - I think foreign languages are more interesting than science.
- _____. I prefer science.
A. You are quite right. B. I couldn’t agree more.
C. That’s all right. D. I really can’t agree with you.
22. ---Do you think it_____ to argue with them? ---The question is not worthy _____.
A. worth; discussing B. worthwhile; to be discussed
C. worthy; to discuss D. worth; to be discussed
