She showed the visitors around the museum，the construction ________ had taken more than three years.(2011·江西)
A．for which B．with which
C．of which D．to which
Julie was good at German，French and Russian，all of ________ she spoke fluently.(2011·湖南)
A．who B．whom C．which D．that
Care of the soul is a gradual process ________ even the small details of life should be considered.(2012·湖南)
A．what B．in what C．which D．in which
The man showed us such a heavy stone ________ no one could lift it.
A．that B．as C．which D．and
The number of the audience，________ we had expected，was well over one thousand.
A．whom B．who C．which D．as
A lot of language learning，________ has been discovered，is happening in the first year of life，so parents should talk much to their children during that period.(2012·安徽，29)
A．as B．it C．which D．this
