Definition: used for adding information about a person or thing just mentioned Level: B1
我们正在找那个丢了钱包的人。
We are looking for the man ___whose wallet was lost.
她是我最好的朋友，她的名字叫安娜。
She is my best friend, ___whose name is Anna.
那是一座老房子，其地下室曾被淹过。
It was an old house, ___whose basement had been flooded.
