The best of both worlds-
मतलब आप एक ही समय में दो अलग-अलग अवसरों का आनंद ले सकते हैं।
E.g. By working part-time and looking after her kids two days a week she managed to get the best of both worlds.

See eye to eye-
इसका मतलब है किसी के साथ सहमत होना।
E.g. They finally saw eye to eye on the business deal.

When pigs fly-
कुछ ऐसा जो कभी नहीं होगा।
E.g. When pigs fly she’ll tidy up her room.

To kill two birds with one stone-
एक बार में दो समस्याओं को हल करने के लिए।
E.g. By taking my dad on holiday, I killed two birds with one stone. I got to go away but also spend time with him.