The students are looking at the blackboard同义句改为同义句
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Thestudentsarelookingattheblackboard同义句改为同义句Thestudentsarelookingattheblackboard同义句改为同义句Thestudentsa
The students are looking at the blackboard同义句改为同义句
The students are looking at the blackboard同义句
改为同义句
The students are looking at the blackboard同义句改为同义句
The blackboard are looked by the students.