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

The guide dogs helping the people with dementia will （）.

The wound soldier made an effort to stand up, but the general stopped him.

What is true about sales of music over the last year

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

I thought you might be tired, （） is why I decided to help you.

Nobody can work well if he is distracting.

所有的公共場所都應(yīng)完全禁止吸煙。

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