Ответ:
1. Opera isn't exactly my cup of tea.
2. Choosing a location for our new store is a hot potato right now.
3. This program is a piece of cake to use.
4. You're full of beans today – it's nice to see you so lively!
5. I thought I was just going to interview the secretary, but they let me talk to the big cheese himself.
6. My husband has had to bring home the bacon ever since I broke my leg.