选择合适的短语,并用所给词的适当形式填空,补全句子.

问题描述:

选择合适的短语,并用所给词的适当形式填空,补全句子.
选择的:die of;die out.
1.Many old customs(风俗)are()in our life.
2.Nowadays,more and more people()all kinds of cancer(癌症).

1)die out
2)die of