有2句英语不会说.请高手帮忙.

I don't know how do my friends treat me in the future.
How do you know what you said is right or wrong?
如果第一句话不加上do,就变成了朋友对待我的程度了.
第二句话很明显'你怎么知道你自己说的是对或是错?'已经说出来了,当然是过去式.

I don't know how my friends treat me in the future.
How do you know what you say is right or wrong?

I don't know how my friends treat me in the future.
How do you know your words are right or not?

I have no idea how my friends is gonna treat me in the future.

How do you know whether you are right or wrong?

I did not know how future friend of mine will be able to treat my."

How "did you know oneself said is right perhaps wrong?