He refused to disclose ______ on the grounds that it would be a breach of confidence.A．th
已帮助 人
He refused to disclose ______, on the grounds that it would be a breach of confidence.
A．that had told him
B．what had told him
C．what had been told him
D．that had been told him
请帮忙给出正确答案和分析，谢谢！
-
正确答案：C
名词性从句题。宾语从句可由连接词that引导，但that仅起连接作用，常可省略。若连接词在句中兼起一个句子成分作用，应用what。本题分析句子结构发现，连接词在句中作主语，故用what。同时主语what和动词tell之间是被动关系，故选C项whathadbeentoldhim。