People ______ long distances frequently have to decide whether they would prefer to go by land, sea

题目简介

People ______ long distances frequently have to decide whether they would prefer to go by land, sea

题目详情

People ______ long distances frequently have to decide whether they would prefer to go by land, sea or air.  
A.to travelB.travelledC.travelD.travelling
题型:单选题难度:偏易来源:不详

答案

D

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