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Manyyearsago,thereweremanyoldcitywallsinBeijing.(同义句转换)manyyearsago,thereweremanyoldcitywallsinbeijing同义句转换________________manyoldcitywallsinbeijing.
题目内容：
Many years ago ,there were many old city walls in Beijing.(同义句转换)
many years ago ,there were many old city walls in beijing同义句转换
____ ____ ____ ____ many old city walls in beijing.优质解答
There used to be
used to表示以前有.
many years ago ,there were many old city walls in beijing同义句转换
____ ____ ____ ____ many old city walls in beijing.
优质解答
used to表示以前有.
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