1. Without their agreeing to our proposal, we can't...
If I say,
"Without their agreement to our proposal..", will it be all right and which is better to say?
Both are fine. The first would be preferred by some.
1. Should I feel responsible for him having said smth. as stupid as that.
It need a question mark
2. Without being able to speak to him first I can't promise you anything.
It makes more sense if you say 'Without speaking to him first,...'
3. As/While we just speaking, we won't solve any of our problems.
This doesn't work- try 'As long as we are just talking...'
1. I object to his bringing here. Incorrect It need an object- I object to his bringing her here.
2. I object to that he's bringing her here. Incorrect
3. I object to that he brings her here. Incorrect