题目内容：

'Where were you?' His wife wanted to know where_________
A he was
B was
C was he
d he had been
请告诉我为什么选第D ,不选A,

优质解答

答案是D,因为用过去完成时,his wife wanted to know是过去时,而where he had been是发生在his wife wanted to know前,即“过去的过去”,所以用过去完成时.