题目内容
13．The doctor has done everything he canto save （save） the poor boy．分析 医生尽了一切努力来拯救那个可怜的孩子．
解答 答案：to save 考查单词填空．根据题干：he can作定语，要用不定式做目的状语，故答案是to save．
点评 解答此题的关键是根据语境推测要填内容表达的含义，然后能理解各选项内容，有时可能没有必要细细区分每个单词的含义，仅根据句子语气就可以判断出正确答案．
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