About _______ of the books in our school library are written in Chinese.

I didn’t have a good sleep last night because of the noise, so I feel _______ now.

I made a promise to myself ________ this year, my first year in high school, would be different.

The doctor ____ the crying baby but couldn’t find out what was wrong with it.

______ the blackboard, and you can ________ some number on it.