(2009·江苏，23)Because of the financial crisis，days are gone ________ local 5－star hotels charged 6,000 yuan for one night.
A．if B．when C．which D．since
(2010·北京，27)Children who are not active or ________ diet is high in fat will gain weight quickly.
A．what B．whose C．which D．that
The days are gone ________ physical strength was all you needed to make a living.(2011·天津，10)
A．when B．that C．where D．which
Ellen was a painter of birds and of nature，________，for some reason，had withdrawn from all human society.(2012·浙江，17)
A．which B．who C．where D．whom
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
Portia，for ________ physics had once been very hard，turned out to be a physicist.
A．whom B．whose C．that D．which
