In here nothing goes as it`s suppose to

[zoobinshid]

Hello everyone,
Would you please tell me which sentence is right?

1)In here nothing goes as it suppose to.
2)In here nothing goes as it suppose to go.
3)In here nothing goes as it`s suppose to.
4)In here nothing goes as it`s supposed to go.

Thanks in advance,

[Mister Micawber]

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#4 is correct. The verb form is to be supposed to.
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