1
Are you all right?
2
Are you interested?
3
Be careful
4
Can I?
5
Can you?
6
Could you?
7
Do you know?
8
Do you remember?
9
How are you?
10
How many?
11
I can.
12
I could.
13
I don't know.
14
I hope.
15
I know.
16
I might.
17
I remember.
18
I should have.
19
I wish.
20
I wonder.
21
I wouldn't.
22
I'd like to.
23
I'll see.
24
I'm afraid.
25
I'm glad.