—I wonder ________ Mary has kept her figure after all these years.
—By working out every day.
A. where B. how
C. why D. if
The Australian boy has a good ________of Chinese and can communicate with others freely.
A. request B. command
C. demand D. usage
People's ________ for bicycles may reflect public dissatisfaction with bus service.
A. insistence B. preference
C. confidence D. reference
（题文）The librarians ________ the books in the library as novels，which are popular with us.
A. suppose B. classify
C. look D. insist
________Wuhu with Shanghai, to be frank, and you'll find it's more convenient to live in the former.
A. To compare B. Comparing
C. Compare D. Compared
Listening to music at home is one thing, going to hear it _____ live is quite another.
A. perform B. performing
C. to perform D. being performed
