A．Alcohol helps develop people’s intelligence.
B．Heavy drinking is not necessarily harmful to one’s health.
C．Controlled drinking helps people keep their wits as they age.
D．Drinking, even moderately, may harm one’s health.

A．Someone who is short is like a square peg.
B．Someone who is not suited for his job.
C．Someone who is standing in a square.
D．Someone who is putting a square peg in a round hole.