—Hi，Bruce，here'saletterforyou.    —Thanks.Iwonder

问题详情：

—Hi，Bruce，here's a letter for you.

     —Thanks. I wonder _____ .

    A. who that letter was from  B. who was from that letter 

    C. who was that letter from  D. who from that letter was

【回答】

A

知识点：宾语从句

题型：选择题