问题详情

Theworkingconditionofthesailorswasveryhard.__________.查看材料
A.Theyoftenhadtosetthesailsinbadweather.
B.Sotheyhadlesscourage.
C.Theywerehappytobesweptoverboardinastrongwind.
D.A70-day-journeyacrosstheAtlanticwastheirhappiestthing.
请帮忙给出正确答案和分析，谢谢！