请英语高手们帮我造三个一般现在时的句子

1 We go to school every day.
疑问句：Do you go to school every day?
否定句：We don't go to school every day.
2 He can help you.
疑问句：Can he help you?
否定句：He can't help you.
3 She is a student.
疑问句：Is she a student?
否定句：She isn't a student.