问题
选择题
There will not be enough space to _____ the earth in the future. [ ]
A. live on
B. live in
C. live on in
D. live in on
答案
答案：D
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There will not be enough space to _____ the earth in the future. [ ]
A. live on
B. live in
C. live on in
D. live in on
答案：D