Here are the correct forms of the words in brackets:

1. Jenny is such a **liar**; I never believe a word she says.
2. My **relationship** with Thomas lasted for more than five years.
3. Lying to your teacher like that was really **honest** **dishonest**.
4. My brother is a **careless** driver. He always drives very dangerously.
5. I have a lot of **admiration** for my best friend, Linda. She’s achieved such a lot.
6. Most of my **relatives** live in Canada, so I don’t see them very often.
7. Uncle Alan has an **amazing** mental ability – he can guess the number you are thinking of.
8. Andrea has a great **personality**. You will really like her.
9. It is essential to do a little **preparation** before you start any trip abroad.
10. I haven’t got the **confidence** to go up to a stranger at a party and introduce myself.