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The smiths have been in China for two years.改成( ) ( ) two years since the Smiths came toChina

题目详情
The smiths have been in China for two years.改成( ) ( ) two years since the Smiths came toChina
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答案和解析
The smiths have been in China for two years.改成(It ) ( is ) two years since the Smiths came toChina
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