高等继续教育 / 大学英语I
正确率：100%
题型描述: 单选题
It was his carelessness that caused his failure.
A.because
B.because of
C.X
D.for
It was his carelessness that caused his failure.
A.because
B.because of
C.X
D.for
参考答案：
佳题速递：