试题题干
Fill in the blanks with the words given in brackets. Make changes or add something where necessary.
The hotel manager, 
(who) I complained about the service, refunded part of our bill.
参考答案
试题解析
本题考查的是关系代词，恢复从句应该是I camplained about the service to him“我向他抱怨”，所以填to whom。