高等继续教育 / 高级英语I
正确率：100%
题型描述: 单选题
This has never been tried before. So itˊs natural that weˊll run ＿＿＿ all kinds of difficulties.
A.over
B.into
C.upon
D.across
This has never been tried before. So itˊs natural that weˊll run ＿＿＿ all kinds of difficulties.
A.over
B.into
C.upon
D.across
参考答案：
佳题速递：