题目内容：

_many times,but he still made the same mistake.
A.Having been told B.He had been told
C.Being told D.Though he had been told.
为什么不选A

优质解答

答案：B
句中有but这个连词,所以前面的是句子,而不是非谓语动词,所以排除A.如果将but去掉,正确答案就是A.