About 50 passengers were burned to death(死亡) on BRT in Xiamen on June 7th,2013.这道题为什么空里填的是death?

About 50 passengers were burned to death(死亡) on BRT in Xiamen on June 7th,2013.这道题为什么空里填的是death?
About 50 passengers were burned to death(死亡) on BRT in Xiamen on June 7th,2013.
这道题为什么空里填的是death?

About 50 passengers were burned to death(死亡) on BRT in Xiamen on June 7th,2013.这道题为什么空里填的是death?
因为这里的to 是介词,介词后加名词或者动名词做宾语的哦!
但这里不能用动名词dying,因为dying表示濒临死亡的.
而 burn to death表示烧死.