网址：http://m.1010jiajiao.com/timu3_id_3016421[举报]
________ many times, but he still couldn’t understand it．
A．Having been told
B．He was told
C．Though having told
D．To have been told
(1)________ many times, but he still couldn’t understand it．
(2)________ many times, he has already known how to do it．
B．Having told
C．He had been told
D．Though he had been told