【2016四川广安一诊卷】Shirley is the girl ________ taught me how to use WeChat (微信)．

A. whom       B．which        C．who        D．when

【2016山东省临沂市中考模拟】18. This is the school _______ I studied three years ago.

A. where              B. when              C. that                D. which

【2016内蒙古通辽一模】(  )39.Do you know the man _____ is sitting behind Nancy?

A. what      B. which      C. what       D. who