The success of chain schools is to some extent because of their marketing and advertising.

A.She published poems frequently.
B.She seldom left home.
C.She lived in an earlier era.
D.She spoke a different language.

A. All TV sets can receive some programs without paying money in a certain area.
B. You may pay for some special programs if you like.
C. If you are interested in a certain subject, you may borrow some video tapes about it.
D. All of the above.