Переведите в прошедшем настоящем и будущем медли:Я делаю семейнее заданиеЯ не

1. I am doing my homework. 
I was doing my homework.
I'll do my homework.
2. I am not doing my homework.
I was not doing my homework. 
I won't do my homework. 
3. Am I doing my homework?
Was I doing my homework?
Will I do my homework?
4. I am at work. 
I was at work. 
I'll be at work. 
5. I am not at work. 
I was not at work. 
I won't be at work. 
6. Am I at work?
Was I at work?
Will I be at work?
7. I am skating. 
I was skating. 
Will I be skating?
8. I am not skating.
I was not skating.
I won't be skating. 
9. Am I skating?
Was I skating?
Will I be skating?