Zhang lili is considered as the most beautiful teacher _____gave her love to her students in danger.Awho BthatCwhomDwhich选B.解释原因.

Zhang lili is considered as the most beautiful teacher _____gave her love to her students in danger.Awho BthatCwhomDwhich选B.解释原因.
Zhang lili is considered as the most beautiful teacher _____gave her love to her students in danger.
Awho
Bthat
Cwhom
Dwhich
选B.解释原因.

Zhang lili is considered as the most beautiful teacher _____gave her love to her students in danger.Awho BthatCwhomDwhich选B.解释原因.
从句缺了主语,根据句子意思应该是指Zhang lili ,而在这,Zhang lili 和 the most beautiful teacher 是同一个人,teacher 是先行词,前面有 the most beautiful 修饰,是最高级,所以要用that.

当先行词被最高级修饰时，用that