1. It is conceivable that knowledge plays an important role in our life.

可想而知，知识在我们的一生中扮演一个重要的角色。

2. Summer is sultry. That's the reason why I don't like it.

夏天很闷热，这就是我不喜欢它的原因。

3. The progress of the society is based on harmony.

社会的进步是以和谐为基础的。

4. We should bring home to people the value of working hard.

我们应该让人们知道努力的价值。

5. Taking exercise is closely related to health.

做运动与健康息息相关。