高等继续教育 / 大学英语II
正确率:100%
题型描述: 单选题
Mike didn’t understand ______ made his wife so upset this morning.
A.how
B.which
C.why
D.what
Mike didn’t understand ______ made his wife so upset this morning.
A.how
B.which
C.why
D.what
参考答案: