Though the shoes are on sale, they are very good. A. but B. / C.so
Do you enjoy _______ pictures outside?
Lao She is famous _______ his play _______ a writer.
—_______ do you talk to your teacher at the School Air? —Once a week.
A library with two hundred thousand books _______ to the school last year.
The customs in America are different _______ those in China.