All their attempts to rescue the child from the burning building were__
问题描述：
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?
All their attempts to rescue the child from the burning building were__ .He dies soon afterwards.A.in vain B.for C.in return D.in place
我选A，why?
答
额,难道只有一个for么.个人觉得选A 啊