In the reading room, we found her 　　　 at a desk, with her attention _____ 　　　 on a book. 

With more people _____ the traffic rules, our city is becoming better organized.

John received an invitation to dinner, and with work        he gladly accepted it.

With the entrance examination _____ up, our classmates work harder and harder.

Years later, he returned home, unexpectedly the old tree of his childhood__________.