The soldiers went on rescuing the people from disaster areas ( )they had worked for over30 hours.

问题描述:

The soldiers went on rescuing the people from disaster areas ( )they had worked for over30 hours.
括号内应填什么?
A.because B.for C.as D.though

d
意思是说 士兵们去救灾害中的人们了,尽管他们已经在之前工作了超过30个小时
选though是因为其他的意思都不对