By the year 2170, people cities and industries on Mars. A. establish B. established C. will ha——青夏教育精英家教网——

题目内容

By the year 2170, people _____ cities and industries on Mars.

A. establish
B. established
C. will have established
D. have established

试题答案

C

相关题目

By the year 2170, people _____ cities and industries on Mars.

A. establish
B. established
C. will have established
D. have established

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