A．They feel stressed out even without any challenges in life.
B．They feel too overwhelmed to deal with life's problems.
C．They are anxious to free themselves from life's troubles.
D．They are exhausted even without doing any heavy work. ~
A．They expand our mind.
B．They prolong our lives.
C．They narrow our focus.
D．They lessen our burdens
A．It is not easily breakable.
B．It came from a 3D printer.
C．It represents the latest style.
D．It was made by a fashion designer.