Помогите с английским пожалуйста

нужно каждое предложение поставить в вопросительное, отрицательное и просто убрать скобки
Вот решение с правильными формами глаголов в Present Continuous:
1. He **is reading** a book now.
2. She **is doing** her homework.
3. My mother **is sitting** at the table now.
4. I **am still writing** a letter.
5. They **are playing** football.
6. It **is snowing** now.
7. We **are having** dinner now.
8. It **is still raining**.
9. Why **are** you **talking**?
10. The girl **is drawing** a picture at the moment.
Надеюсь, что хотя бы большая часть верная :D
1) He's reading a book now
He's not reading a book now
Is he reading book now?
2) She's doing her homework.
She's not doing her homework
Is she doing her homework?
3) My mother is sitting at the table now.
My mother isn't sitting at the table now.
Is my mother sitting at the table now?
4) I'm still writing a letter.
I'm still not writting a letter.
Am I still writting a letter?
5) They're playing a football.
They're not playing a football.
Are they playing a football?
6) it's snowing now.
It's not snowing now.
Is it snowing now?
7) We're having dinner now.
We're not having dinner now.
Are we having dinner now?
8) Its still raining.
It's still not raining.
Is it still raining?
9) Why are you talking?
Why are you not talking?
Здесь я хз как сделать из вопросительного предложения вопросительное(
10) The girl is drawing a picture at the moment.
The girl isn't drawing a picture at the moment.
Is the girl drawing a picture at the moment?
he is reading a book now
1 is reading
2 does
3 is sitting
4 write
5 play
6 is snowing
7 are having
8 raining
9 ?????
10 is drawing