a tough nut in a sentence

Examples

1. "I won't kid you, it's a tough nut to swallow,"
2. Vermund said, " It's a tough nut to crack ."
3. Syria is a tough nut to crack and Egypt is definitely interested to help,
4. "It's a tough nut to crack as to what Haiti needs more of ."
5. He's a tough nut and boy he can run ."
6. Tamara is a tough nut and she's got guts.
7. Obviously, seasonal cinema is a tough nut to crack.
8. But Vikrman is a tough nut to crack.
9. She isn't such a tough nut to crack.
10. And he is a tough nut to crack.