下面句子该填什么?并逐个说明理由
5Thenotebook()coverisredismine
a.whob.whichc.whosed.that
6Thisistheverybook()ibadlyneed.
a.towhichb.thatc.whichd.what
20Hestilllivesintheroom,thewindow()facestotheeast.
a.whichb.whosec.whered.ofwhich
21Hestilllivesintheroom()isinthenorthofthecity.
a.whichb.whosec.whered.ofwhich
22Hestilllivesintheroom()thereisabeautifultable.
a.whichb.whosec.whered.ofwhich
23()leavestheroomlastoughttothrnoffthelights.
a.anyoneb.whoc.thosed.whoever
24()wholeavestheroomlastoughttothrnoffthelights.
a.anyoneb.whoc.thosed.whoever
25()wholeavetheroomlastoughttothrnoffthelights.
a.anyoneb.whoc.thosed.whoever
原因不要太多,逐个说明就好