Модальный глагол хэв ту

Question

Модальный глагол хэв ту

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Answer 1

1 - don’t have to
2 - doesn’t have to
3 - have to; doesn’t have to
4 - have to
5 - have to
6 - has to

Answer 2

1.dont have to 
3.dont have to, has to
4.have to
6.has to