問題詳情

21.Earth is now the only place for us to live on. Maybe someday, it will be ____ for people to live on Mars.
(A) possible
(B) excited
(C) wonderful
(D) safe

參考答案

答案:A
難度:非常簡單1
統計:A(1),B(0),C(0),D(0),E(0)

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