1. "It's a hot potato." Sentence: The issue of tax increases is a hot potato for the government right now.
2. "It's bread and butter." Sentence: Teaching English online is my bread and butter, as it provides a steady income.
3. "Is as cool as a cucumber." Sentence: Despite the pressure, he remained as cool as a cucumber during the presentation.
4. "As easy as pie." Sentence: Solving this puzzle was as easy as pie for her.
5. "Full of beans." Sentence: The children were full of beans after their nap.
6. "An apple a day keeps the doctor away." Sentence: My grandmother always says, "An apple a day keeps the doctor away."
7. "Too many cooks spoil the broth." Sentence: We decided to limit the number of people involved in the project, because too many cooks spoil the broth.
8. "Having a finger in every pie." Sentence: She is so busy, she seems to have a finger in every pie.