What can mouth guard do for us
What can mouth guard do for us
A．It can prevent our faces from being hit.
B．It can reduce the effect of shock to our teeth.
C．It can stop us from grinding our teeth.
D．It can make up for the damage we make to our teeth.

A．is an obvious illegal behavior.
B．would easily offend people there.
C．is protected by the southern state law.
D．will cause death penalty to the one who does it.

A．Because her present job is dull and boring.
B．Because she wants to develop well and earn more money.
C．Because she hopes to work for a famous company.
D．Because her family has moved to a new place.