21. — May I have ______ honour of dining with you?
—Sure, I feel quite honoured, because you are ______ honour to our city.
A. an; the B. the; an C. the; / D. an; /
22. If a person takes drugs, they will slow down his thinking and ______ turn off his brain.
A. finally B. exactly C. actually D. hopefully
23. It is unwise to ______ too much importance to the information collected by the reporters.
A. attach B. attract C. devote D. pay
24. “I won’t have you ______ to your father like that,” said the mother.
A. talk B. talked C. talking D. to talk