It is when you nearly lose someone when you become fully conscious of how much you value them.

After reading the novel he was too exciting to go to sleep that night.

No one should blind himself （） the well-known fact.

Man was, is and always will be trying to improve his living conditions.

It took years for Einstein"s theory to gain acceptably.

我們認(rèn)為節(jié)約用水非常重要。

All of them are （） at Lana"s achievement.

What effect has the Internet had on music piracy

It"s no good learning English without practice.

There is nothing so admirable as a man whose sacrifices his life and happiness for others.