Find and correct mistakes in the following sentences
1 -how are you do? - quite well, thank you.
2 Let me to introduce myself . My name's Alex Frolov
3 He is fond in computers
4 My best friend isn't interested at graffiti arts
5 He's crazy of programming
6 I'm really well at Chemistry
7 Mark is a student of technology. He's a technician
8 My mother's friend is a doctor. She is a physicist