问题描述：
know how far he lives from his grandparents home know how far he lives from his grandparents home
Mary wants to know how he gets to his grandparents home
Mary wants to know how long it takes to get to his grandparents home
Mary wants to know what he thinks of the trip
Mary wants to know how he gets to his grandparents home
Mary wants to know how long it takes to get to his grandparents home
Mary wants to know what he thinks of the trip
问题解答：
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