1 7-5 0 people survey to requre all class and selective class .
1 7-5 0 people were surveyed about being required to take all classes and having selective classes . 1 7-5 0 people survey to require all class and selective class . 1 7-5 0 people survey to requre all class and selective class . 1 7-5 0 people surveyed to requre all class and selective class .
1 7-5 0 people were surveyed about being required to take all classes and having selective classes .
このテキストから文法上の誤りをすべて削除してください: 1 7-5 0 people survey to requre all class and selective class . 出力: