I wish to thank Professor Smith，without________help I would never have got this far.
(2012·天津，7)
A．who B．whose C．whom D．which
The air quality in the city，________ is shown in the report，has improved over the past two months. (2012·福建，23)
A．that B．it
C．as D．what
We live in an age________more information is available with greater ease than ever before. (2012·浙江，9)
A．why B．when
C．to whom D．on which
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
After the flooding，people were suffering in that area，________urgently needed clean water，medicine and shelter to survive. (2012·江苏，22)
A．which B．who
C．where D．what
Maria has written two novels，both of ________ have been made into television series.
(2012·山东，23)
A．them B．that
C．which D．what
