What is true about the people suffering from dementia

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

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

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

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

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

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

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

事實勝于雄辯。

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