我纠结在相同的选项上!
1:Withinafewyearshehadwrittenfivebooks,none___couldbeeasilyclassifiedasnovel.
A.ofwhom
B.ofthem
C.ofwhich
D.inwhich
2:Thefactoryproduceshalfamilllionpairsofshoeseveryyear,80%____aresoldabroad.
A.ofwhich
B.whichof
C.ofthem
D.ofthat
我想问一下,这两道题为什么不能都选ofthem