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

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

Cars turn into dead weapons when they are driven carelessly.

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

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

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

Having a conversation with people with dementia will be （）.

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

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

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