分类：教育/科学-外语学习-英语考试
问题：一道英语题,请帮忙选择,谢谢!You______worryabo 
You______worry about him.He's living a good life.A.don't have to B.mustn't.have to D.must请详细分析选项,非常感谢!
回答：选A 
don't have to 是不必的意思。
have to 是不得不的意思