
1.She is sitting in the classroom.(改为一般疑问句)
Is she sitting in the classroom?
2.He brought a pencil to school.(改为否定句)
He didn't bring a pencil to school.

1.She is sitting in the classroom.(改为一般疑问句)
Is she sitting in the classroom?
2.He brought a pencil to school.(改为否定句)
He didn't bring a pencil to school.