过去完成时的问题It had been wrapped up in newspaper and it contained

Three months passed,and then one morning,Sam found his wallet outside his front door.It had been wrapped up in newspaper and it contained half the money he had lost,together with a note which said:'A thief,yes,but only 50 per cent a thief!'
整个句子是 一般过去时态,基于这个时态,早于这个时态发生的用完成时,即过去完成时
It had been wrapped up in newspaper
钱包寄过来的时候已经倍包在报纸里面 用过去完成时 没错啊
it contained half the money he had lost
已经丢失的钱 用过去完成时 也没错啊
钱包是用报纸包着的,里面有他丢失的钱的一半,而且还附着一张纸条,上面写着 :“一个小偷,是的,但只是一个50%的小偷!”