In pairs, make a dialogue for each situation.
1. You re at your friends house. You suddenly remember that you promised to phone your mother. You dont have a mobile phone.
2. The train is very full. A family is sitting together and these is one free space in the middle of them.
3. You need to leave class early today.

1. Oh Mike, I forgot to call my mom! I shouldve called her an hour ago! Oh no, I didnt 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 dont bother you much. - Thats ok. Take your seat.
3. Mr. Brown, Im afraid Ill have to leave earlier today. I have an appointment at the dentists at 3 pm. - Ok, you may leave as soon as you hand in your test.