摘要： It is not until recently the scientists have found proof of there being water on Mars. A. when B. that C. how D. what
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It is not until recently ______ the scientists have found proof of there being water on Mars.
|
A．when |
B．that |
C．how |
D．what |
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It is not until recently ______ the scientists have found proof of there being water on Mars.
- A.when
- B.that
- C.how
- D.what
It is not until recently ______ the scientists have found proof of there being water on Mars.
A. when B. that C. how D. what
查看习题详情和答案>>