请选择CBA8a+I4m:t6W+q.o;u'lThe boy ___________ the Internet every day..x,y4G']5a3v(O)E:K2X3E+e
A. is surfing.x,y4G']5a3v(O)E:K2X3E+e
B. surf.x,y4G']5a3v(O)E:K2X3E+e
C. surfs.x,y4G']5a3v(O)E:K2X3E+e