为这些人提供水是生死攸关的事情。

Getting water to these people is ___a ___matter ___of ___life ___and ___death.

我告诉他这是生死攸关的事情。

I told him it was ___a ___matter ___of ___life ___and ___death.

医生们说这次手术是生死攸关的事情。

The doctors said the surgery was ___a ___matter ___of ___life ___and ___death.