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

1. how DO you do? 2. Let me introduce myself.3.  He is fond OF computers.4.  My best friend isn't interested IN graffiti arts5. He's crazy ABOUT programming6. I'm really well IN Chemistry7. - 8. -