Someone ______ at the door. Can you open it

__________ reasons for my decisionto become a university professor, my father’s advice was __________ mostimportant one.

_______ number of people invited was fifty, but_______ number of them were absent for different reasons.

Dogs barked madly while fish jumped out of water. In no time ______ as a prediction of a coming earthquake.

依次填入下列各句中横线处的词语，最恰当的一组是（ ）①一个时代，让思想遭受这样的 ，后代的人会为此 。②田野里农民们为了几毛钱拼命地干活，有点 ，惹人 ，可他们自己并不觉得。