We don’t think we are able to afford ________.A.to travel to so many citiesB.to so many citiesC.the cost of travel so many citiesD.the cost the travel to so many cities
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A解析从左栏的讲析得知，afrord后可以接名词、代词或不定式作宾语，是及物动词，由此B项可先排除；travel为不及物动词，C项后应有介词to；D项结构混乱。