Which one is agreement expression?

Which one is disagreement expression?

Let's write down the explanation___we don't forget

I painted the walls white______make the room look brighter.

I go early _____I wouldn't be late

Jaehyun : How was your trip yesterday, John?

Johny : ____________________I enjoyed it.

Koko : The walls is so dirty. How about we paint the walls?

Pika : ______________________ We should talk to our teacher first.

Titi : it's cloudy today, it looks like it's going to rain. We should just stay at home.

Lili : _________________, we cancel our agenda today.

Siti : You have to take some rest____get well soon, Ira.

Ira : Alright, Siti.

We need to drink a lot of water _______ you will not get dehydrated.