填空题 When asked such a difficult question, little John 1 (想不出答案案).

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【正确答案】 1、When asked such a difficult question, little John came up with no answer.    
【答案解析】本题测试短语come up with。该短语意为“想出(计划、答案等)；提供”。本题也可使用情态动词的否定式，即：could not come up with any answer。