______of them has been to Australia several times, so they know the Opera House very well.A.BothB.Al

题目简介

______of them has been to Australia several times, so they know the Opera House very well.A.BothB.Al

题目详情

______of them has been to Australia several times, so they know the Opera House very well.
A.BothB.All C.NoneD.Each
题型:单选题难度:中档来源:不详

答案

D
根据后文动词为has。故选D

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