1)Was he in Kiev last week?
He wasn't in Kiev last week.
2)Is this a pen?
This isn't a pen.
3) Have I a cat?
I haven't a cat.
Правильно будет "I have my own car" или "I have a car of mine".
My mother.
My mother-she is all for me. She can support me in a hard period of my life. I like to spend a lot of time with my mom, because she is very interesting person with a lot of good threats of character.