I will say that

I don't think so

A : How about swimming?

B: Probably not

A: We have to reduce the use of plastics

B: That's the point

I couldn't agree with you more

I couldn't agree with you less

I have a different opinion with you

No doubt about it

A : Is Bandung Mall near here?

B: Yes, it is

C: I don't think so. It's about 100 km from here

A: oh,really?

A : You won't go to work tomorrow, will you?

B: No, I will not

I'd say the exact opposite

That's so sure

I am of a different opinion

I feel the same way about . . .

That's not what I think

I agree but its too far