12.This statue was put up _________ Dr. Sun Yat-sen.
He found them _____ at a table ____ chess.
More and more high-rise buildings have been built in big cities space.
He is _____ careless a student that he often _____ some letters while writing.
In my opinion, the most famous to tourists in the city is the wooden tower.
_ _ busy schoolwork, the children also have to take arts, music and sports classes in their free time.