问题补充：
No one knows in fifty years.
A. what will our life be like
B. what is our life like
C. what our life will be like
D. what our life is like
答案：
A. what will our life be like
B. what is our life like
(答案→)C. what our life will be like
D. what our life is like
解析：此题重点考查宾语从句的时态和语序问题，无论哪种句式结构充当宾语从句都要用陈述句语序，从句的时态要和主句的时态保持一致。
