Question

You remembered to sign the contract, didn't you?
(Begin: You didn't.........)

Answer 1

You didn't forget to sign the contract, did you?

Answer 2

You didn’t forget to sign the contract, did you?

Explanation:  

• A question tag is the grammatical structure where an imperative or a declarative statement turned into a question statement by inserting an interrogative part (i.e. the tag).

• Let us consider the example, “You are Sam, aren’t you?” Here the declarative statement ‘you are Sam’ is turned into interrogative by adding the question tag ‘aren’t you?’ Here, we can convert the tag int positive without changing the meaning. So we can add ‘You didn’t forget to sign the contract, did you?’