He is sleeping改为否定句一般疑问句

He is sleeping改为否定句一般疑问句 He iS a teacher.改为否定句 He is Bob.改为否定句 he is a student.改为否定句 He is Bob.改为否定句 He is cook noodles .改为否定句 he is your brother改为否定句 He is a cook.改为否定句 He is always late for school .改为完全否定句 He is watching TV at home.(改为否定句） I think he is right.【改为否定句】 He is always late for class (改为否定句） 把He is my teacher.改为否定句 He is reading some newspapers.(改为否定句) He is going to play the piano.改为否定句 He is from Canada（改为否定句） he is listening to music 改为否定句 maybe he is a teacher改为否定句怎么改?