What’s the drinking age according to the National Minimum Drinking Age Act().

A. Those who have lots of hobbies and those who have no hobbies.
B. Those who are happy with morning exercises and those who are too lazy to get out of bed.
C. Those who always keep themselves busy and those who idle their time away.
D. Those who are happy with their everyday life and those who are never happy with their everyday life.

A. Study the case carefully beforehand.
B. Stick to a set target.
C. Appear friendly to the other party.
D. Try to be flexible about their terms.