31.The fact that smoking is harmful to health is____most smokers are quite aware of.
Liu Xiang had worked hard . ________, he won the first prize in the 28th Olympic Games.
Was he ________to get to school on time when he got up at 7:45?
People all around the world have been doing as much as they can ________the people in Afghanistan.
—Does Peter feel better? —No, he is seriously ill and still________.
He was ________and died of lung cancer at an early age.