76.She did not know whether to sell her books or_____.
答案解析
解析：
whether...or.....连接的并列成分应保持结构一致。根据 or 前面的不定式短语 to sell her books 可知,空处也应用不定式形式,可排除B、C 两项。根据句意可知,She 和keep 之间为逻辑上的主谓关系,所以应用不定式的一般式,表示主动,即“to+动词原形”的形式。故选A。
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