There's no rose without a thorn(刺). This thought is absolutely necessary to prepare you _____41_____ (experience) less pain and more joy in your journey of life.
With a bird's-eye view, you may realize something meaningful. During your school _____42_____ (year), while joyfully _____43_____ (study) knowledge you are also under the pressure of homework, examinations, _____44_____ ranking. You face crises and pains. Meanwhile, all sorts of complex affairs may happen _____45_____ you and your classmates. In your _____46_____ (young), adolescence may fill you with unrealized desires and send you into deeper puzzlement.
Entering marriage, you are _____47_____ (actual) in the center of all the contradictions—the matching of different personalities, financial management and so on. As you become old, your health may decline and _____48_____ (vary) troubles in your career and family may appear gradually.
We may therefore conclude that much of our lire may not _____49_____ (spend) in contentment.
However, in fact, the discontent things are not useless since you may learn more from them _____50_____ from the things that cheer you up.