The program “ Master’s Lectures” of CCTV are both interesting and instructive .No wonder they_______a large audience.

1. A.
   appoint to
2. B.
   account for
3. C.
   appeal to
4. D.
   appear on

 The program “ Master’s Lectures” of CCTV are both interesting and instructive .No wonder they_______a large audience.

A. appoint to       B. account for        C. appeal to        D. appear on