Nobody can work well if he is distracting.

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

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

事實(shí)勝于雄辯。

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

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

All male guests at this restaurant are respectfully requested that they are put on coat and tie.

It is quite typical of him to be late.

What effect has the Internet had on music piracy

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