I have to work every day. (改为否定句)

正确答案：I don’t have to work every day.

第1题：

My son wants to watch TV after dinner every day.(改为否定句)

参考答案：My son doesn't want to watch TV after dinner every day.
第2题：

That is a bag．（改为否定句）
________ ________a bag．

正确答案：
44. That isn't
第3题：

Both Mary and John are students．（改为否定句）

正确答案：
7． Neither Mary rior John is a student．
第4题：

My brother has a car.(改为否定句)

参考答案My brother doesn't have a car.
第5题：

He thinks he can pass the exam．（改为否定句）
__________________

正确答案：
39． He doesn't think he can pass the exam．