改错题：Are all of students staying in the classroom now?错在哪里,
问题描述：
改错题：Are all of students staying in the classroom now?错在哪里,
答
of 后面加the~~~
答
可以去掉of，也可以在of后面加定冠词the。要么说all students，要么说all of the students。
答
Are all of the students staying in the classroom now?