All their attempts to rescue the child from the burning building were__

A.in vain B.for C.in return D.in place

我选A，正确答案是B。why?

ll their attempts to rescue the child from the burning building were__ 。why.for C.in return D.in place

我选A，正确答案是B. A.in vain B.He dies soon afterwards

额，难道只有一个for么。。。个人觉得选A 啊

答案c 从着火的大楼里把那个男孩救出来的一切努力都白费了。