1. Oh Mike, I forgot to call my mom! I should've called her an hour ago! Oh no, I didn't take my mobile phone with me. Could I borrow yours? - Sure, Dan! here you are. - Thanks a lot!
2. Excuse me, could I take that seat between you? Hope, I don't bother you much. - That's ok. Take your seat.
3. Mr. Brown, I'm afraid I'll have to leave earlier today. I have an appointment at the dentist's at 3 pm. - Ok, you may leave as soon as you hand in your test.