I’d love to watch the specially dogs that can act as guides to the blind.
A. training
B. being trained
C. trained
D. to be trained
网友回答
A. training
B. being trained
(答案→)C. trained
D. to be trained
解析：句意：我很想看看经过专门训练的能做导盲犬的狗。A.-ing表主动、进行；B.表示正在被训练；C.-ed表被动、完成；D.表将来、被动。这里是考查副词加动词的过去分词的构成形式，故选C。
考点: 考查非谓语动词的用法。