Certainty and Uncertainty

This gonna my next topic for ninth grade students. We've a test today,wish they get high score. I'll check it...

Certainty and Uncertainty
➡this is the kind of expressions bout your feeling,we can say that, when u are sure or not about something.

The ways to ask:
▶ are u sure about........?
▶ are u really sure about........?
▶ do u think so that' s it is true?
▶ do u feel sure about.......?
▶ is it true about....?
▶ is that definite that....?

The responses:
(+) showing certainty
⚫i'm sure about it.
⚫i'm positive?
⚫i'm absolutely certain.
⚫there is no doubt about it.
⚫positively
⚫certainly
⚫i am quite sure
⚫i believe it's sure
⚫sure,why not?
⚫of course yes
⚫no doubt about it

(-) showing uncertainty
⚫i am not sure
⚫i am not certain about
⚫i doubt that
⚫i don't know exactly
⚫no words i can say about
⚫i have no idea about that

Well,that's all,wait for my exercises.

Regards😉