问题补充:
Those boys many times not to go on line, but it doesn’t make any difference.
A. have told
B. told
C. have been told
D. were being told
答案:
A. have told
B. told
(答案→)C. have been told
D. were being told
解析:考查时态语态:those boys和tell是被动关系,排除AB,根据第二句话,可知用现在完成时的被动,句意:这些男孩被告知很多次不要上网,但没有差别。选C。