1.Emily,_____ 11-year-old girl,can sing _____ pop songs.Her dream is to be a pop singer.
　　A.a; a number of B.a; the number of
　　C.an; a number of D.an; the number of
　　2.The shy girl was asked several questions by the teacher,but she answered _____ of them.
　　A.all B.both C.none D.some