请选择CBA0R7^8R-H-Z)A/b5x;N5V1o;f My sister can _____ well. She's a good ______.*|,y'j5e3y'Y0]1{*m9H+g2w0X
A. singing; singer*|,y'j5e3y'Y0]1{*m9H+g2w0X
B. sing; singer*|,y'j5e3y'Y0]1{*m9H+g2w0X
C. sing; singing*|,y'j5e3y'Y0]1{*m9H+g2w0X