What he had done is _______
C
of+n=adj，可以作表语。ofnovalue：没有一点价值。value是名词，不能作表语，也不能形容主语的性质。B和D都是of+adj的结构，是错误的。
“MylastDuchess”isapoemthatbestexemplifiesRobertBrowning’s().
TheAdventuresofTomSawyerand,especially,itssequence()provedthemselvestobethemilestoneintheAmericanliterature.
Man is a “victim of forces over which he has no control. ” This is a notion held strongly by( ).
Mark Twain employed an unpretentious style of( )in his novels which is best described as “vernacular ”.
ThePortraitofALadyisgenerallyconsideredtobe()masterpiece,whichdescribesthelifejourneyofanAmerican()inaEuropeanculturalenvironment.