请选择DCBA'k)~,\:`*R The headmaster stopped ______ to us because there was a call for him.,_)a0e'l1]:?'O,j;s.e8u5e
A. talking,_)a0e'l1]:?'O,j;s.e8u5e
B. to talk,_)a0e'l1]:?'O,j;s.e8u5e
C. saying,_)a0e'l1]:?'O,j;s.e8u5e
D. to say,_)a0e'l1]:?'O,j;s.e8u5e