Hello, would somebody please check if the ff sentences are correct:
1) I've told you already about this.
2) I told you already about this.
3) As I've said, there is nothing wrong with the machine.
4) Like I've said, there is nothing wrong with the machine.
5) As I said, there is nothing wrong with the machine.
6) Like I said, there is nothing wrong with the machine.
Thanks!!!