-----What did you do with the order?
----- I handed it to I think is in charge of sales.
A. whoever
B. whomever
C. who
D. whom
网友回答
A. whoever
B. whomever
C. who
D. whom
解析：考察宾语从句。介词to后面接宾语从句。宾语从句Whoever I think is in charge of sales 中的I think是插入语。Whoever在句中作主语。