A．Happiness comes from ever—going change．
B．Happiness comes when you succeed in doing somethin9．
C．Happiness we als off when he finally comes back to England．
D．Happiness stays even when he comes back to England．
A．Money．
B．Enthusiasm．
C．New challenges．
D．Professional knowledge．
A．Change call come from forces around you．
B．Change Can come from within yourself．
C．Change can bring joy and satisfaction to you．
D．Change sometimes can also let you down．
A．Enthusiastic．
B．Indifferent．
C．Critical．
D．Neutral．