Our electric products are guaranteed (last) ______ a much longer time than others’.

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问题 Our electric products are guaranteed (last) ______ a much longer time than others’.

选项

答案to last

解析 guarantee后接动词的不定式形式，所以填to last。句意：我们的电器产品保证比其他厂家的耐用。

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大学英语三级A级

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