Cars turn into dead weapons when they are driven carelessly.

Have run out of fuel, the plane crashed to the ground.

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

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

It"s no good learning English without practice.

Nobody can work well if he is distracting.

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

What effect has the Internet had on music piracy

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

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