Here are the correct forms of the words in bold:

1. There are many **violent** programs on TV. It is not good for children.
2. We all know that using our cars causes **pollution**, but we still do it.
3. I like vegetable soup. It is **tasty** for me.
4. I want to **lengthen** my trousers. They are too short.
5. Bob feels very tired after two continuous nights of **sleep**.
6. We always believe him because we know he is always **truthful**.
7. I’m afraid your answer is **incorrect**, so you haven’t won today’s top prize.
8. Mrs. Brown spent an hour **beautifying** herself before going to the party.
9. A holiday in Cambodia is **surprisingly** cheap.
10. A balanced diet alone is not enough for a healthy **life**.