His mother is _____ actress and his father is ______ good engineer. A. an, an B. an, a C. a, an
( )— What are you going to do? —________
( ) The shopping center is ________ Zhongshan Road.
( ) He wants ________ the History Museum.
( )—Is this ________ wallet? —Yes, i t’s ________.
( ) Christmas ________.