Відповідь:

1. Jenny came up with a great idea for the party and we offered to help her organise it.
2. No, I don't mind going on a boat trip when we're in Croatia.
3. I failed to remember the meeting yesterday. I was thinking of other things and I completely forgot about it.
4. You can't expect to win an argument with Gary. He's very stubborn and doesn't agree with you.
5. Gavin says that he doesn't care about money, but he keeps on earning lots of money! He does his job, and he earns.
6. I'm fed up with playing tennis with you. You always shout at me when I do something wrong.