单项选择题
A．he can realize what happiness is B．he may not end up with happiness C．he may consider it extreme happiness D．he should not feel content with himself
A．to improve his service B．to start a new business C．to withdraw his money D．to reduce his investment
A．think of something extraordinary B．experience delight at an old age C．feel the magic quality of pleasure D．enjoy what one has at the moment