A.

You have been invited to a party. Because of possible alternative commitments, you are not sure if you will be able to attend, although you would like to. Explain the position to your host.

Of course, I'd love to come but... The thing is that... Will it be all right if I... ?

B.

Someone is very angry with your brother or sister because he or she did not turn up for an appointment. You do not know the facts of the case but are sure no offence was intended. Give reasons for supposing that an unfortunate misunderstanding has taken place.

I'm sure he/she couldn't have... deliberately. There must have been a misunderstanding. If he/she had known... he/she would never have...

C.

A member of your family is getting married. Ask your boss for the day off.

Could I have the day off...? The thing is that my... I'd be very grateful if...

D.

Someone is smoking in a non-smoking compartment. Politely ask him not to do this.

Would you mind not...? It is a..., you know.

E.

You have completed the work you have been doing. Ask your boss for further instructions and suggest one or two useful things you could do.

I've finished... Is there anything...? I could... It needs...