将下面句子既要改为否定句又要改为一般疑问句（高一英语）

1.we study chemistry on Fridays.
We doesn't study chemistry on Fridays.
Do you study chemistry on Fridays?
2.We are studying Russian this term.
We aren't studying Russian this term.
Are you studying Russian this term/
3.We use the computer once a week.
We don't use the computer once a week.
Do you use the computer once a week?
4.I play football after school on Mondays.
I don't play football after school on Mondays.
Do you play football after school on Mondays?
5.All the students in my class doing their homework now.
Not all the students in my class are doing their homework now.
Are all the students in your class doing their homework now?
6.Most Senior High students are learn English at school.(原句是are learning?)
Most Senior High students are not learning English at school.
Are most Senior high students learning English at school?
7.School starts at 9 am every day.
School doesn't start at 9 am every day.
Does school start at 9 am every day?
8.The sun rises in the morning.
The sun doesn't rise in the morning.
Does the sun rise in the morning?