- 问题详情:Manypeopleenjoytakingtripsbythemselves.Unluckily,theydonotalwayshavethebest____21____ead,peopleshouldconsidergrouptours.Takingagrouptourisawisechoiceforpeopleto____22____themselves.First,grouptoursplantravelers’routes,sopeopledon’thaveto___...
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