Sentence: Some days ago, you replied that these...

Dear teachers,

Please choose the correct sentences:

  1. Some days ago, you replied that these 10 sentences are correct.
    2.Some days ago, you have replied that these 10 sentences are correct.
    3.Some days ago, you replied that these 10 sentences were correct.
    4.Some days ago, you have replied that these 10 sentences were correct.
    5.I also posted this question in one forum in VN but no one answered me.
    6.I also posted this question in one forum in VN but no one has answered me.

Best regards
Q

I prefer 3,5,6