1. I''ve really got to go, I''ll get back to you when I get the office.
2. Sorry, I must end the conversation. There''s someone on the other line.
3. Sorry, I''ve got to hang up. My wife''s waiting for me.
4. I think I''d better let you go. I''ll talk to you later.
5. I have to get back to work. I''ll call you later tonight.
6. Shall we continue this later? I''ve got a call waiting.
7. It''s kind of late. Why don''t we talk about it tomorrow?
8. I''ve got to meet a client right now. Can we talk later?
9. I won''t keep you any longer.
10. Sorry, it''s getting late. Can you call again tomorrow morning?