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问题: 一道英语题,请帮忙选择,谢谢!

You______worry about him.He's living a good life.
A.don't have to
B.mustn't
C.have to
D.must

请详细分析选项,非常感谢!

解答:

选A
don't have to 是不必的意思。
have to 是不得不的意思