问题描述：
Our school has changed greatly in the past several years.
There ___ ___greatl changes in the past several years in our school.
改同义句.
这个非延续动词是怎么变成延续性动词的？
There ___ ___greatl changes in the past several years in our school.
改同义句.
这个非延续动词是怎么变成延续性动词的？
问题解答：
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