Where there is birth,there will be d- .People d- when their

Where there is birth,there will be (death ).People (die) when their time comes.
第一空作there be 句型的主语,因此应用名词形式:death.
第二空作谓语动词,因此应用动词形式:die.
句意:人有生就有死.时间到了就会死.