Sometimes we might even need to spend some time making a request.
A:making a decision
B:asking for something
C:answering a question
D:being polite
买一张桌子的价钱可买3把椅子,买6张桌子比买4把椅子贵392元,桌子的单价是多少元?
—I'd like to, but I have a meeting to ______.