John went to the station with the car to meet Mary, so she needn’t (walk)______ back home.

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问题 John went to the station with the car to meet Mary, so she needn’t (walk)______ back home.

选项

答案have walked

解析 needn’t have done意为"本不必"，即已经做了某事，而实际上不必要。句意是约翰开车去车站接玛丽，所以她本不必步行回家的，故正确答案为have walked。

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大学英语三级B级

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