He wanted to know
A. why he bought the present for
B. which room he lived in the hotel
C. who he had travelled with
D. who has been chosen to be the chairperson
网友回答
A. why he bought the present for
B. which room he lived in the hotel
(答案→)C. who he had travelled with
D. who has been chosen to be the chairperson
解析：考查宾语从句。A 项中for应去掉，B 项中少了一个介词in，D 项中时态不一致。故选C。