题目内容
Stephen Hawking believes that the earth is unlikely to be the only planet ________ life has developed
gradually.
gradually.
[ ]
A. that
B. where
C. which
D. whose
B. where
C. which
D. whose
B
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目
题目内容