二战期间，纳粹对犹太人实施了大规模的毒气屠杀。

During World War II, Nazis carried out mass ___gassings of Jewish people.

记得在长途旅行前给车加满油。

Don't forget to do the ___gassing before our long road trip.

在二战期间，纳粹使用毒气室进行大规模屠杀。

During WWII, Nazis used ___gassings in chambers for mass executions.