The gir is singing in the classroom.（改为否定句）（改为一般疑问句,并做肯定回答）
问题描述：
The gir is singing in the classroom.（改为否定句）（改为一般疑问句,并做肯定回答）
答
the girl is not singing in the classroom,
is the girl singing in the classroom
yes,she is