Definition: used instead of 'who' as the object of a verb or preposition Level: B2
我遇到了一个我曾与之共事的人。
I met a man with ___whom I used to work.
有500名乘客，其中121人溺水身亡。
There were 500 passengers, of ___whom 121 drowned.
您想和谁说话？
To ___whom do you wish to speak?
