-Will there be more tall buildings in 50 years?- .A. No.they aren't B. No.there won'tC. No.there isn't D. No.they won't 题目和参考答案——青夏教育精英家教网—

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—Will there be more tall buildings in 50 years?

—________.

A. No，they aren't B. No，there won't

C. No，there isn't D. No，they won't

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