the doctors tried their bestto save the patient's life,__failed.1or 2so 3but 4because

问题描述:

the doctors tried their bestto save the patient's life,__failed.1or 2so 3but 4because

but表示转折但是

3.but
原文是:医生尽他最大的能力去挽救病人的生命,但失败了