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If I want to invert the following sentences, which one is correct for each sentences?

1.I wouldn't tell you the answer until you do it.

Not until you do it would / will / won't / wouldn't I tell you the answer.

2. I won't tell you the answer until you do it.

Not until you do it would / will / won't / wouldn't I tell you the answer.

3. I didn't release until I did it.

Not until you did it did / do / don't / didn't I release.

Is it correct for this inversion?

4. I couldn't let you play.

=Under no circumstance could I let you play.
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1.I wouldn't tell you the answer until you do it.

Not until you do it would I tell you the answer.

2. I won't tell you the answer until you do it.

Not until you do it will I tell you the answer.

3. I didn't release (him? them? the basketball?) until you did it.

Not until you did it did I release (him? them? the basketball?)

4. I couldn't let you play.

=Under no circumstances could I let you play. OK, I guess, but it seems like overkill. How about 'Never'?
Comments  
Do you want to know which base sentence is correct, or which word would be the best choice for each of the multiple choice questions? Generally, if you're inverting a sentence, you stay with the same grammatical form.

I won't (will not) leave the house until I hear from you.

Not until I hear from you will I leave the house.

(Retain one negative, and same grammatical form). Some of your sentences, though are incorrect to begin with, and sound very forced when inverted.