The doctor will get more practice out of me than out of ten ordinary patients.

It is quite typical of him to be late.

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.

The Crimea also released CDs for sale in shops because （）.

What is true about sales of music over the last year

The author"s attitude towards gift giving is （）.

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

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

Nobody can work well if he is distracting.