- 问题详情:LindaandDavidhavetraveledbyairfromLondontoSydney,Australia.Lindahaspromised(答应)hermotherthatshewillringhertoletherknowthattheyhavearrivedsafely.Thisissomethingshehaddoneeversinceshewasachild.Davidthinksitisnotagoodideatoringsofar,tospendtoomuch,...
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