Itisnotuntilrecently
问题详情：
It is not until recently ______ the scientists have found proof of there being water on Mars.
A. when B. that C. how D. what
【回答】
B知识点：强调句
题型：选择题
问题详情：
It is not until recently ______ the scientists have found proof of there being water on Mars.
A. when B. that C. how D. what
【回答】
B知识点：强调句
题型：选择题
