If you are ________about Australian cities，just read the book written by Dr. Johnson.

There, a big memorial has been built______ him, who devoted himself to the poor

The professor, _______ the project, made acomment on the report.

(2013·高考福建卷)The girl has a great interest in sport and ________ badminton classes twice a week over the last three years

s proper diet, exercise is one of the key ___________of a healthy lifestyle.