She'll never forget her stay there ________ she found her son who had gone missing two years before.
A．that B．which C．where D．when
Gun control is a subject ________ Americans have argued for a long time.
A．of which B．with which
C．about which D．into which
Whenever I met her，________ was fairly often，she greeted me with a sweet smile.
A．who B．which C．when D．that
She brought with her three friends，none of ________ I had ever met before.
A．them B．who C．whom D．these
The house ________ I grew up has been taken down and replaced by an office building.
A．in it B．in C．in that D．in which
I was born in New Orleans，Louisiana，a city ________ name will create a picture of beautiful trees and green grass in our mind.
A．which B．of which C．that D．whose
