2a:
Are they...?Yes,they are/No,they aren't.
Are you...?Yes,I am/No,I'm not.
Have you got...?Yes ,I have/No,I haven't.
Has she got..?Yes,she hasn't/No,she hasn't.
Can you..?Yes ,I can/No,I can't.
2b.
1.Yes,I have.
2.No,she hasn't.
3.Yes,I am.
4.Yes,he is.