Which of the following is structurally co r rect?
1
1
I don't ha nd in my answer sheet until I'd gone over all of the questions again.
2
I won’t ha nd in my answer sheet until I go over all the questions again.
3
I didn’t ha nd in my answer sheet until I've gone all the questions again.
4
I haven’t ha nded in my answer sheet until I'd gone over all the questions again.
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