Fill in the correct preposition

1. He hasn't heard [ ] his pen friend in China for a while.

2. The Prince of Wales is heir [ ] the British throne.

3. I was very impressed [ ] his extensive knowledge of English literature.

4. She insisted [ ] having her lawyer present before signing the contract.

5. The teacher was intent [ ] helping the weak student catch up with the rest of the class.

6. Martin failed to pass his driving test [ ] the second time.

7. There's no excuse [ ] her rude behaviour.

8. She was very jealous [ ] her sister's popularity.

9. Fiona was named [ ] her grandmother.

10. That actress is known [ ] causing problems with her co-stars.