问题描述：
There are over 50 students in our class.(改同义句)
There are over 50 students in our class.
There are 50 sudents in our class.
要改成同义句
There are over 50 students in our class.
There are( )50 sudents in our class.
这是填空题,要求是改成同意句.句型不能变
There are over 50 students in our class.
There are 50 sudents in our class.
要改成同义句
There are over 50 students in our class.
There are( )50 sudents in our class.
这是填空题,要求是改成同意句.句型不能变
问题解答：
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