Question

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We are goin to make this journey a success.......
We ought not to have to pay for basic medicines......

Answer 1

a) aren't we?

b) ought we?

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Pl. mark as the brainliest answer if helpful.............

Answer 2

We are going to make this journey a success, aren't we?
We ought not to have to pay for basic medicines, ought we? or, We ought not to have to pay for basic medicines, should we?
Keep in mind that should is similar to ought to, the thing is, ought to is used to give more imphatic [stong] advise. 
Hope it helped. ^^