高等继续教育 / 大学英语语法
正确率：100%
题型描述: 单选题
So little known ＿＿＿＿ that the explorers had to proceed without maps.
A.terrain was
B.was the terrain
C.the terrain was
D.the terrain
So little known ＿＿＿＿ that the explorers had to proceed without maps.
A.terrain was
B.was the terrain
C.the terrain was
D.the terrain
参考答案：
佳题速递：