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Ellen was a painter of birds and of nature,________,for some reason,had withdrawn from all human society.(2012·浙江,17)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
(2009·陕西)Gun control is a subject ________ Americans have argued for a long time.
A.of which B.with which
C.about which D.into which
(2010·上海)Wind power is an ancient source of energy ________ we may return in the near future.
A.on which B.by which C.to which D.from which