3. "What are the skills that concern you most?" my teacher asked. (I)
->my teacher asked me what the skills were that concern me most
4. I have never read such as interesting novel as The Little Prince. (MOST)
->this is the most interesting novel "The Litle Prince" that i have ever read
5.
Finish your homework or you can't go out with your friend (if)
→→If you don't finish your homework, you can't go out with your friend.
6.
They're not sure how they should operate the new system (to)
→→They're not sure how to operate the new system.
7. It took me 4 hours to read the first chapter of the book (spent)
→→I spent 4 hours reading the first chapter of the book.
8, Snowboarding is more dangerous than tennis ( as )
→→Tennis isn't as dangerous as snowboarding.