To express annoyance
A Oh no !
B This is boring.
C
How irritating !
D I don't believe this.
2. To give a reason
A There's a coffee shop nearby.
B
It'll help to pass the time.
C It won't take long.
D Don't you think it's a good idea ?
3. To approve
A All right
B I agree with you.
C
That's good idea.
D Why didn't I think of that ?