问题补充:
It is not until recently the scientists have found proof of there being water on Mars.
A. when
B. that
C. how
D. what
答案:
A. when
(答案→)B. that
C. how
D. what
解析:可联系答.案.网客服索取。
时间:2019-06-27 01:24:11
It is not until recently the scientists have found proof of there being water on Mars.
A. when
B. that
C. how
D. what
A. when
(答案→)B. that
C. how
D. what
解析:可联系答.案.网客服索取。