When I do / When I've done / When and if

Don't worry I'm late tonight.

Tom might phone while I'm out this evening. he does, can you take a message?

I'm going to Rome next week. I'm there, I hope to visit a friend of mine.

I think Jill will get the job. I'll be very surprised she doesn't get it.

I'm going shopping. you want anything, I can get it for you.

I'm going away for a few days. I'll phone you I get back.

I want you to come to the party, but you don't want to come, that's all right.

We can eat at home or, you prefer, we can go to a restaurant.