my favorite sport is playing xxx还是is xxx

my favorite sport is playing xxx还是is xxx my favorite sport is run还是running My favorite sport is playing basketball.为什么加ing? xxx is my name My favorite movie s（ ） is xxx 填空英语 xxx是人名 1.My favorite sport is... _______ is my favorite sport (skate)is my favorite sport . My favorite sport is playing soccer.的 sport 是否要加s His favorite actor is XXX ( )China. My favorite sport is playing table tennis .请问；为什么要用playing? My favorite sports is swimming.还是My favorite sport is swimmi