Tomorrow would be Christmas Day, and she had only $1.87 .A.with which to buy a present to JimB.by which to buy Jim a presentC.with which she could buy a present for JimD.in which to buy Jim a present
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C解析本题考查介词＋which/whom＋动词不定式。“介词＋which/whom＋动词不定式”结构一般充当句子的定语。此句中的with which to buy Jim a present 是动词不定式的一种特殊形式，在此作定语修饰 $1.87。